| 
						Crain's Scale / Gauge Encyclopedia | 
					
					
						| 
						15 | 
						
						Scale Name: | 
						
						 SE Scale    M
						Scale | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
					
					
						| 
						  | 
						
						Scale Ratio: | 
						
						 1:13.5 | 
						  | 
						  | 
					
					
						| 
						  | 
						
						Alternate Names: | 
						
						 7/8 Inch Scale | 
						
						22.6 mm Scale | 
						
						 1:13.5 Scale | 
						
						  | 
					
					
						| 
						  | 
						
						  | 
						
						 Represented | 
						
						  | 
						
						Scale | 
						
						      Model Track Gauge | 
						
						Error | 
						
						 Track | 
					
					
						| 
						  | 
						
						Ser #   | 
						
						  Gauge | 
						
						 Inches | 
						
						Ratio | 
						
						  In/ft | 
						
						 mm/ft | 
						
						      Inches | 
						
						          mm | 
						
						% | 
						
						 Used | 
					
					
						| 
						  | 
						
						Correct Gauge: | 
						  | 
						  | 
						
						  | 
					
					
						| 
						15 | 
						
						263 | 
						
						 4ft 8.5in | 
						
						56.5 | 
						
						13.5 | 
						
						0.889  | 
						
						22.6  | 
						
						4.19  | 
						  | 
						
						106.30  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						15 | 
						
						264 | 
						
						 Meter | 
						
						39.4 | 
						
						13.5 | 
						
						0.889  | 
						
						22.6  | 
						
						2.92  | 
						  | 
						
						74.13  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						15 | 
						
						265 | 
						
						 3 Foot | 
						
						36 | 
						
						13.5 | 
						
						0.889  | 
						
						22.6  | 
						
						2.67  | 
						  | 
						
						67.73  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						15 | 
						
						266 | 
						
						 2.5 Foot | 
						
						30 | 
						
						13.5 | 
						
						0.889  | 
						
						22.6  | 
						
						2.22  | 
						  | 
						
						56.44  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						15 | 
						
						267 | 
						
						 2 Foot | 
						
						24 | 
						
						13.5 | 
						
						0.889  | 
						
						22.6  | 
						
						1.78  | 
						  | 
						
						45.16  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						15 | 
						
						268 | 
						
						 15 Inch | 
						
						15 | 
						
						13.5 | 
						
						0.889  | 
						
						22.6  | 
						
						1.11  | 
						  | 
						
						28.22  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						  | 
						
						Commonly Used Gauges | 
						  | 
						  | 
						  | 
						  | 
					
					
						| 
						15 | 
						
						269 | 
						
						 SE45 Gauge | 
						
						56.5 | 
						
						13.5 | 
						
						0.889  | 
						
						22.6  | 
						
						4.173 | 
						  | 
						
						105.99  | 
						
						  | 
						
						-0.3  | 
						  | 
					
					
						| 
						15 | 
						
						269a | 
						
						 M Gauge | 
						
						56.5 | 
						
						13.5 | 
						
						0.889  | 
						
						22.6  | 
						
						4.173 | 
						  | 
						
						105.99  | 
						
						  | 
						
						-0.3  | 
						  | 
					
					
						| 
						15 | 
						
						270 | 
						
						 4" Gauge | 
						
						56.5 | 
						
						13.5 | 
						
						0.889  | 
						
						22.6  | 
						
						4.000 | 
						  | 
						
						101.60  | 
						
						  | 
						
						-4.4  | 
						  | 
					
					
						| 
						15 | 
						
						271 | 
						
						 Mn3 Gauge | 
						
						36 | 
						
						13.5 | 
						
						0.889  | 
						
						22.6  | 
						
						2.750 | 
						  | 
						
						69.85  | 
						
						  | 
						
						3.1  | 
						  | 
					
					
						| 
						15 | 
						
						272 | 
						
						 7/8"n3 Gauge | 
						
						36 | 
						
						13.5 | 
						
						0.889  | 
						
						22.6  | 
						
						2.750 | 
						  | 
						
						69.85  | 
						
						  | 
						
						3.1  | 
						  | 
					
					
						| 
						15 | 
						
						273 | 
						
						 Mn2 Gauge | 
						
						24 | 
						
						13.5 | 
						
						0.889  | 
						
						22.6  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-0.7  | 
						
						 Ga.1 | 
					
					
						| 
						15 | 
						
						274 | 
						
						 LS13.5 Gauge | 
						
						24 | 
						
						13.5 | 
						
						0.889  | 
						
						22.6  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-0.7  | 
						
						 Ga.1 | 
					
					
						| 
						15 | 
						
						275 | 
						
						 45 mm Gauge | 
						
						24 | 
						
						13.5 | 
						
						0.889  | 
						
						22.6  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-0.7  | 
						
						 Ga.1 | 
					
					
						| 
						15 | 
						
						276 | 
						
						 1-3/4" Ga | 
						
						24 | 
						
						13.5 | 
						
						0.889  | 
						
						22.6  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-0.7  | 
						
						 Ga.1 | 
					
					
						| 
						15 | 
						
						277 | 
						
						 Gauge 1 | 
						
						24 | 
						
						13.5 | 
						
						0.889  | 
						
						22.6  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-0.7  | 
						
						 Ga.1 | 
					
					
						| 
						15 | 
						
						278 | 
						
						 7/8"n2 Ga | 
						
						24 | 
						
						13.5 | 
						
						0.889  | 
						
						22.6  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-0.7  | 
						
						 Ga.1 | 
					
					
						| 
						15 | 
						
						279 | 
						
						 13.5 / 45 Ga | 
						
						24 | 
						
						13.5 | 
						
						0.889  | 
						
						22.6  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-0.7  | 
						
						 Ga.1 | 
					
					
						| 
						15 | 
						
						280 | 
						
						 Mn18 Gauge | 
						
						18 | 
						
						13.5 | 
						
						0.889  | 
						
						22.6  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						-6.3  | 
						
						 Ostd  | 
					
					
						| 
						15 | 
						
						281 | 
						
						 7/8"n18 Ga | 
						
						18 | 
						
						13.5 | 
						
						0.889  | 
						
						22.6  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						-6.3  | 
						
						 Ostd  | 
					
					
						| 
						15 | 
						
						282 | 
						
						 SM32 Gauge | 
						
						18 | 
						
						13.5 | 
						
						0.889  | 
						
						22.6  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						-6.3  | 
						
						 Ostd  | 
					
					
						| 
						15 | 
						
						282a | 
						
						 O Ga USA | 
						
						18 | 
						
						13.5 | 
						
						0.889  | 
						
						22.6  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						-6.3  | 
						
						 Ostd  | 
					
					
						| 
						15 | 
						
						283 | 
						
						 Mn15 Gauge | 
						
						15 | 
						
						13.5 | 
						
						0.889  | 
						
						22.6  | 
						
						1.125 | 
						
						1.285 | 
						
						28.58  | 
						
						32.64  | 
						
						1.3  | 
						  | 
					
					
						| 
						15 | 
						
						284 | 
						
						 7/8"n15 Ga | 
						
						15 | 
						
						13.5 | 
						
						0.889  | 
						
						22.6  | 
						
						1.125 | 
						
						1.285 | 
						
						28.58  | 
						
						32.64  | 
						
						1.3  | 
						  | 
					
					
						| 
						15 | 
						
						285 | 
						
						 1-1/8" Gauge | 
						
						15 | 
						
						13.5 | 
						
						0.889  | 
						
						22.6  | 
						
						1.125 | 
						
						1.285 | 
						
						28.58  | 
						
						32.64  | 
						
						1.3  | 
						  | 
					
					
						| 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
					
					
						| 
						This is a relatively new entrant
						in the Scale Wars. but the use of Gauge 1 track to
						represent | 
						  | 
						  | 
					
					
						| 
						2 foot gauge is an obvious step.
						Sometimes quoted as 1:13.7 Scale, which makes it
						precisely | 
						  | 
					
					
						| 
						7/8 inch Scale. | 
						  | 
						  | 
						  | 
						  | 
						  | 
					
					
						| 
						  | 
						
						  | 
						  | 
						
						  | 
						
						  | 
						
						  | 
					
					
						| 
						Crain's Scale / Gauge Encyclopedia | 
					
					
						| 
						16 | 
						
						Scale Name: | 
						
						 D Scale | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
					
					
						| 
						  | 
						
						Scale Ratio: | 
						
						 1:16 | 
						  | 
						  | 
					
					
						| 
						  | 
						
						Alternate Names: | 
						
						 3/4 Inch Scale | 
						
						III Scale (in Europe) | 
						
						"III"=Roman Nm Threee | 
					
					
						| 
						  | 
						
						  | 
						
						  | 
						
						 3/4 inch = 1 foot | 
						
						Number 4 Scale (in USA) | 
						
						  | 
					
					
						| 
						  | 
						
						  | 
						
						 Represented | 
						
						Scale | 
						
						      Model Track Gauge | 
						
						Error | 
						
						 Track | 
					
					
						| 
						  | 
						
						Ser #   | 
						
						 Gauge | 
						
						 Inches | 
						
						Ratio | 
						
						  In/ft | 
						
						 mm/ft | 
						
						      Inches | 
						
						          mm | 
						
						% | 
						
						 Used | 
					
					
						| 
						  | 
						
						Correct Gauge: | 
						  | 
						  | 
						
						  | 
					
					
						| 
						16 | 
						
						286 | 
						
						 4ft 8.5in | 
						
						56.5 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						3.53  | 
						  | 
						
						89.69  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						16 | 
						
						287 | 
						
						 Meter | 
						
						39.4 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						2.46  | 
						  | 
						
						62.55  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						16 | 
						
						288 | 
						
						 3 Foot | 
						
						36 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						2.25  | 
						  | 
						
						57.15  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						16 | 
						
						289 | 
						
						 2.5 Foot | 
						
						30 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						1.88  | 
						  | 
						
						47.63  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						16 | 
						
						290 | 
						
						 2 Foot | 
						
						24 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						1.50  | 
						  | 
						
						38.10  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						16 | 
						
						291 | 
						
						 15 Inch | 
						
						15 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						0.94  | 
						  | 
						
						23.81  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						  | 
						
						Commonly Used Gauges | 
						  | 
						  | 
						  | 
						  | 
					
					
						| 
						16 | 
						
						292 | 
						
						 4" Gauge | 
						
						56.5 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						4.000 | 
						  | 
						
						101.60  | 
						  | 
						
						13.3  | 
						  | 
					
					
						| 
						16 | 
						
						293 | 
						
						 3-7/8" Ga | 
						
						56.5 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						3.875 | 
						  | 
						
						98.43  | 
						  | 
						
						9.7  | 
						  | 
					
					
						| 
						16 | 
						
						294 | 
						
						 3-3/4" Ga | 
						
						56.5 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						3.750 | 
						  | 
						
						95.25  | 
						  | 
						
						6.2  | 
						  | 
					
					
						| 
						16 | 
						
						295 | 
						
						 3-5/8" Ga | 
						
						56.5 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						3.625 | 
						  | 
						
						92.08  | 
						  | 
						
						2.7  | 
						  | 
					
					
						| 
						16 | 
						
						296 | 
						
						 D Gauge | 
						
						56.5 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						3.504 | 
						
						  | 
						
						89.00  | 
						
						  | 
						
						-0.8  | 
						  | 
					
					
						| 
						16 | 
						
						297 | 
						
						 Proto 16 | 
						
						56.5 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						3.531 | 
						
						  | 
						
						89.69  | 
						
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						16 | 
						
						298 | 
						
						 Gauge III | 
						
						56.5 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						3.500 | 
						
						3.605 | 
						
						88.90  | 
						
						91.57  | 
						
						-0.9  | 
						
						 Ga.4 | 
					
					
						| 
						16 | 
						
						299 | 
						
						 3-1/2" Ga | 
						
						56.5 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						3.500 | 
						
						3.605 | 
						
						88.90  | 
						
						91.57  | 
						
						-0.9  | 
						
						 Ga.4 | 
					
					
						| 
						16 | 
						
						300 | 
						
						 Gauge 4 | 
						
						56.5 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						3.500 | 
						
						3.605 | 
						
						88.90  | 
						
						91.57  | 
						
						-0.9  | 
						
						 Ga.4 | 
					
					
						| 
						16 | 
						
						301 | 
						
						 Dn42 Gauge | 
						
						42 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						2.520 | 
						  | 
						
						64.01  | 
						  | 
						
						-4.0  | 
						
						 Ga.3 | 
					
					
						| 
						16 | 
						
						302 | 
						
						 Dm Gauge | 
						
						39.4 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						2.362 | 
						  | 
						
						59.99  | 
						  | 
						
						-4.1  | 
						
						 Ga.3 | 
					
					
						| 
						16 | 
						
						303 | 
						
						 3/4"m Ga | 
						
						39.4 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						2.500 | 
						
						2.566 | 
						
						63.50  | 
						
						65.18  | 
						
						1.5  | 
						
						 Ga.3 | 
					
					
						| 
						16 | 
						
						304 | 
						
						 Gauge 3 | 
						
						39.4 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						2.500 | 
						
						2.566 | 
						
						63.50  | 
						
						65.18  | 
						
						1.5  | 
						
						 Ga.3 | 
					
					
						| 
						16 | 
						
						305 | 
						
						 Proto 16n3 | 
						
						36 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						2.250 | 
						  | 
						
						57.15  | 
						
						0.00  | 
						
						0.0  | 
						  | 
					
					
						| 
						16 | 
						
						306 | 
						
						 Ga IIIn3 | 
						
						36 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-21.5  | 
						
						 Ga.1 | 
					
					
						| 
						16 | 
						
						307 | 
						
						 3/4"n2.5 | 
						
						30 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-5.8  | 
						
						 Ga.1 | 
					
					
						| 
						16 | 
						
						308 | 
						
						 LS16 Gauge | 
						
						30 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-5.8  | 
						
						 Ga.1 | 
					
					
						| 
						16 | 
						
						309 | 
						
						 1-3/4" Ga | 
						
						30 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-5.8  | 
						
						 Ga.1 | 
					
					
						| 
						16 | 
						
						310 | 
						
						 Gauge IIIe | 
						
						30 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-5.8  | 
						
						 Ga.1 | 
					
					
						| 
						16 | 
						
						311 | 
						
						 Gauge 1 | 
						
						30 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-5.8  | 
						
						 Ga.1 | 
					
					
						| 
						16 | 
						
						312 | 
						
						 16 / 45 Ga | 
						
						30 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-5.8  | 
						
						 Ga.1 | 
					
					
						| 
						16 | 
						
						313 | 
						
						 3/4"m760 | 
						
						29.9 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-5.5  | 
						
						 Ga.1 | 
					
					
						| 
						16 | 
						
						314 | 
						
						 3/4"m750 | 
						
						29.5 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-4.2  | 
						
						 Ga.1 | 
					
					
						| 
						16 | 
						
						315 | 
						
						 LS16 Gauge | 
						
						27 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						4.7  | 
						
						 Ga.1 | 
					
					
						| 
						16 | 
						
						316 | 
						
						 45 mm Gauge | 
						
						27 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						4.7  | 
						
						 Ga.1 | 
					
					
						| 
						16 | 
						
						317 | 
						
						 1-3/4" Ga | 
						
						27 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						4.7  | 
						
						 Ga.1 | 
					
					
						| 
						16 | 
						
						318 | 
						
						 16 / 45 Ga | 
						
						27 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						4.7  | 
						
						 Ga.1 | 
					
					
						| 
						16 | 
						
						319 | 
						
						 Gauge 1 | 
						
						27 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						4.7  | 
						
						 Ga.1 | 
					
					
						| 
						16 | 
						
						320 | 
						
						 LS16 Gauge | 
						
						24 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						17.7  | 
						
						 Ga.1 | 
					
					
						| 
						16 | 
						
						321 | 
						
						 45 mm Gauge | 
						
						24 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						17.7  | 
						
						 Ga.1 | 
					
					
						| 
						16 | 
						
						322 | 
						
						 1-3/4" Ga | 
						
						24 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						17.7  | 
						
						 Ga.1 | 
					
					
						| 
						16 | 
						
						323 | 
						
						 16 / 45 Ga | 
						
						24 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						17.7  | 
						
						 Ga.1 | 
					
					
						| 
						16 | 
						
						324 | 
						
						 Gauge 1 | 
						
						24 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						17.7  | 
						
						 Ga.1 | 
					
					
						| 
						16 | 
						
						325 | 
						
						 3/4"n20 | 
						
						20 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						0.0  | 
						
						 Ostd  | 
					
					
						| 
						16 | 
						
						326 | 
						
						 O Ga USA | 
						
						20 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						0.0  | 
						
						 Ostd  | 
					
					
						| 
						16 | 
						
						327 | 
						
						 3/4"n500 | 
						
						19.7 | 
						
						16 | 
						
						0.750  | 
						
						19.1  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						1.5  | 
						
						 Ostd  | 
					
					
						| 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
					
					
						| 
						This is a popular live steam
						scale. Many model cars, trucks, and tractors are | 
						  | 
					
					
						| 
						sold at 1:16 and 1:18 scales. A
						railway model scale of 1:17.5 is noted. | 
						  | 
					
					
						| 
						  | 
						
						  | 
						  | 
						
						  | 
					
					
						| 
						Crain's Scale / Gauge Encyclopedia | 
					
					
						| 
						17 | 
						
						Scale Name: | 
						
						 16 mm Scale | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
					
					
						| 
						  | 
						
						Scale Ratio: | 
						
						 1:19.1 | 
						  | 
						  | 
					
					
						| 
						  | 
						
						Alternate Names: | 
						
						 16.0 mm =1 foot | 
						
						 2-7/8 Inch Gauge (as a scale
						name) | 
						
						 | 
					
					
						| 
						  | 
						
						  | 
						
						  | 
						
						 SM Scale | 
						
						  | 
						
						 5/8 Inch Scale | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
					
					
						| 
						  | 
						
						  | 
						
						 Represented | 
						
						  | 
						
						Scale | 
						
						      Model Track Gauge | 
						
						Error | 
						
						 Track | 
					
					
						| 
						  | 
						
						Ser #   | 
						
						 Gauge | 
						
						 Inches | 
						
						Ratio | 
						
						  In/ft | 
						
						 mm/ft | 
						
						      Inches | 
						
						          mm | 
						
						% | 
						
						 Used | 
					
					
						| 
						  | 
						
						Correct Gauge: | 
						  | 
						  | 
						
						  | 
					
					
						| 
						17 | 
						
						328 | 
						
						 4ft 8.5in | 
						
						56.5 | 
						
						19.1 | 
						
						0.628  | 
						
						16.0  | 
						
						2.96  | 
						  | 
						
						75.14  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						17 | 
						
						329 | 
						
						 Meter | 
						
						39.4 | 
						
						19.1 | 
						
						0.628  | 
						
						16.0  | 
						
						2.06  | 
						  | 
						
						52.40  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						17 | 
						
						330 | 
						
						 3 Foot | 
						
						36 | 
						
						19.1 | 
						
						0.628  | 
						
						16.0  | 
						
						1.88  | 
						  | 
						
						47.87  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						17 | 
						
						331 | 
						
						 2.5 Foot | 
						
						30 | 
						
						19.1 | 
						
						0.628  | 
						
						16.0  | 
						
						1.57  | 
						  | 
						
						39.90  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						17 | 
						
						332 | 
						
						 2 Foot | 
						
						24 | 
						
						19.1 | 
						
						0.628  | 
						
						16.0  | 
						
						1.26  | 
						  | 
						
						31.92  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						17 | 
						
						333 | 
						
						 15 Inch | 
						
						15 | 
						
						19.1 | 
						
						0.628  | 
						
						16.0  | 
						
						0.79  | 
						  | 
						
						19.95  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						  | 
						
						Commonly Used Gauges | 
						  | 
						  | 
						  | 
						  | 
					
					
						| 
						17 | 
						
						334 | 
						
						 3-1/2" Ga | 
						
						66 | 
						
						19.1 | 
						
						0.628  | 
						
						16.0  | 
						
						3.500 | 
						  | 
						
						88.90  | 
						
						  | 
						
						1.3  | 
						
						 Ga.4 | 
					
					
						| 
						17 | 
						
						335 | 
						
						 Gauge 4 | 
						
						66 | 
						
						19.1 | 
						
						0.628  | 
						
						16.0  | 
						
						3.500 | 
						  | 
						
						88.90  | 
						
						  | 
						
						1.3  | 
						
						 Ga.4 | 
					
					
						| 
						17 | 
						
						336 | 
						
						 3-1/4" Ga | 
						
						66 | 
						
						19.1 | 
						
						0.628  | 
						
						16.0  | 
						
						3.250 | 
						  | 
						
						82.55  | 
						
						  | 
						
						-5.9  | 
						  | 
					
					
						| 
						17 | 
						
						337 | 
						
						 3" Gauge | 
						
						56.5 | 
						
						19.1 | 
						
						0.628  | 
						
						16.0  | 
						
						3.000 | 
						  | 
						
						76.20  | 
						
						  | 
						
						1.4  | 
						  | 
					
					
						| 
						17 | 
						
						338 | 
						
						 2-7/8" Ga | 
						
						56.5 | 
						
						19.1 | 
						
						0.628  | 
						
						16.0  | 
						
						2.875 | 
						  | 
						
						73.03  | 
						
						  | 
						
						-2.8  | 
						  | 
					
					
						| 
						17 | 
						
						339 | 
						
						 Old Ga 3 | 
						
						56.5 | 
						
						19.1 | 
						
						0.628  | 
						
						16.0  | 
						
						2.835 | 
						
						  | 
						
						72.01  | 
						
						  | 
						
						-4.2  | 
						  | 
					
					
						| 
						17 | 
						
						340 | 
						
						 2-3/4" Ga | 
						
						56.5 | 
						
						19.1 | 
						
						0.628  | 
						
						16.0  | 
						
						2.750 | 
						  | 
						
						69.85  | 
						
						  | 
						
						-7.0  | 
						  | 
					
					
						| 
						17 | 
						
						341 | 
						
						 2-5/8" Ga | 
						
						42 | 
						
						19.1 | 
						
						0.628  | 
						
						16.0  | 
						
						2.675 | 
						  | 
						
						67.95  | 
						
						  | 
						
						21.6  | 
						  | 
					
					
						| 
						17 | 
						
						342 | 
						
						 2-1/2" Ga | 
						
						42 | 
						
						19.1 | 
						
						0.628  | 
						
						16.0  | 
						
						2.675 | 
						  | 
						
						67.95  | 
						
						  | 
						
						21.6  | 
						  | 
					
					
						| 
						17 | 
						
						343 | 
						
						 2" Gauge | 
						
						39.4 | 
						
						19.1 | 
						
						0.628  | 
						
						16.0  | 
						
						2.000 | 
						  | 
						
						50.80  | 
						
						  | 
						
						-3.0  | 
						
						 Ga.2 | 
					
					
						| 
						17 | 
						
						344 | 
						
						 Gauge 2 | 
						
						39.4 | 
						
						19.1 | 
						
						0.628  | 
						
						16.0  | 
						
						2.000 | 
						  | 
						
						50.80  | 
						
						  | 
						
						-3.0  | 
						
						 Ga.2 | 
					
					
						| 
						17 | 
						
						345 | 
						
						 LS19 Gauge | 
						
						36 | 
						
						19.1 | 
						
						0.628  | 
						
						16.0  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-6.3  | 
						
						 Ga.1 | 
					
					
						| 
						17 | 
						
						346 | 
						
						 45 mm Gauge | 
						
						36 | 
						
						19.1 | 
						
						0.628  | 
						
						16.0  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-6.3  | 
						
						 Ga.1 | 
					
					
						| 
						17 | 
						
						347 | 
						
						 1-3/4" Ga | 
						
						36 | 
						
						19.1 | 
						
						0.628  | 
						
						16.0  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-6.3  | 
						
						 Ga.1 | 
					
					
						| 
						17 | 
						
						348 | 
						
						 Gauge 1 | 
						
						36 | 
						
						19.1 | 
						
						0.628  | 
						
						16.0  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-6.3  | 
						
						 Ga.1 | 
					
					
						| 
						17 | 
						
						349 | 
						
						 19.1 / 45 Ga | 
						
						36 | 
						
						19.1 | 
						
						0.628  | 
						
						16.0  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-6.3  | 
						
						 Ga.1 | 
					
					
						| 
						17 | 
						
						350 | 
						
						 SM45 | 
						
						36 | 
						
						19.1 | 
						
						0.628  | 
						
						16.0  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-6.3  | 
						
						 Ga.1 | 
					
					
						| 
						17 | 
						
						351 | 
						
						 1-1/4" Ga | 
						
						24 | 
						
						19.1 | 
						
						0.628  | 
						
						16.0  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						-0.5  | 
						
						 Ostd  | 
					
					
						| 
						17 | 
						
						352 | 
						
						 O Ga USA | 
						
						24 | 
						
						19.1 | 
						
						0.628  | 
						
						16.0  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						-0.5  | 
						
						 Ostd  | 
					
					
						| 
						17 | 
						
						353 | 
						
						 SM32 | 
						
						24 | 
						
						19.1 | 
						
						0.628  | 
						
						16.0  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						-0.5  | 
						
						 Ostd  | 
					
					
						| 
						17 | 
						
						354 | 
						
						 On Gauge | 
						
						24 | 
						
						19.1 | 
						
						0.628  | 
						
						16.0  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						-0.5  | 
						
						 Ostd  | 
					
					
						| 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
					
					
						| 
						Models in this scale are fairly
						rare, but British modelers like it for live | 
						  | 
					
					
						| 
						steam and electric outdoor
						(Garden) railways. Alternate scale ratio is  | 
						  | 
					
					
						| 
						1:19.65 or 15.5 mm =1 foot. Also
						11/16 Scale (1:17.5 ratio) is mentioned. | 
					
					
						| 
						  | 
						
						  | 
						  | 
						
						  | 
					
					
						| 
						Crain's Scale / Gauge Encyclopedia | 
					
					
						| 
						18 | 
						
						Scale Name: | 
						
						 F Scale | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
					
					
						| 
						  | 
						
						Scale Ratio: | 
						
						 1:20.3 | 
						  | 
						  | 
					
					
						| 
						  | 
						
						Alternate Names: | 
						
						 3/5 Inch Scale | 
						
						15 mm Scale | 
						
						 1:20.3 Scale | 
						
						  | 
					
					
						| 
						  | 
						
						  | 
						
						 Represented | 
						
						  | 
						
						Scale | 
						
						      Model Track Gauge | 
						
						Error | 
						
						 Track | 
					
					
						| 
						  | 
						
						Ser #   | 
						
						 Gauge | 
						
						 Inches | 
						
						Ratio | 
						
						  In/ft | 
						
						 mm/ft | 
						
						      Inches | 
						
						          mm | 
						
						% | 
						
						 Used | 
					
					
						| 
						  | 
						
						Correct Gauge: | 
						  | 
						  | 
						
						  | 
					
					
						| 
						18 | 
						
						355 | 
						
						 4ft 8.5in | 
						
						56.5 | 
						
						20.3 | 
						
						0.591  | 
						
						15.0  | 
						
						2.78  | 
						  | 
						
						70.69  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						18 | 
						
						356 | 
						
						 Meter | 
						
						39.4 | 
						
						20.3 | 
						
						0.591  | 
						
						15.0  | 
						
						1.94  | 
						  | 
						
						49.30  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						18 | 
						
						357 | 
						
						 3 Foot | 
						
						36 | 
						
						20.3 | 
						
						0.591  | 
						
						15.0  | 
						
						1.77  | 
						  | 
						
						45.04  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						18 | 
						
						358 | 
						
						 2.5 Foot | 
						
						30 | 
						
						20.3 | 
						
						0.591  | 
						
						15.0  | 
						
						1.48  | 
						  | 
						
						37.54  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						18 | 
						
						359 | 
						
						 2 Foot | 
						
						24 | 
						
						20.3 | 
						
						0.591  | 
						
						15.0  | 
						
						1.18  | 
						  | 
						
						30.03  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						18 | 
						
						360 | 
						
						 15 Inch | 
						
						15 | 
						
						20.3 | 
						
						0.591  | 
						
						15.0  | 
						
						0.74  | 
						  | 
						
						18.77  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						  | 
						
						Commonly Used Gauges | 
						  | 
						  | 
						  | 
						  | 
					
					
						| 
						18 | 
						
						361 | 
						
						 3" Gauge | 
						
						56.5 | 
						
						20.3 | 
						
						0.591  | 
						
						15.0  | 
						
						3.000 | 
						  | 
						
						76.20  | 
						
						  | 
						
						7.8  | 
						  | 
					
					
						| 
						18 | 
						
						362 | 
						
						 2-7/8" Ga | 
						
						56.5 | 
						
						20.3 | 
						
						0.591  | 
						
						15.0  | 
						
						2.875 | 
						  | 
						
						73.03  | 
						
						  | 
						
						3.3  | 
						  | 
					
					
						| 
						18 | 
						
						363 | 
						
						 F Gauge | 
						
						56.5 | 
						
						20.3 | 
						
						0.591  | 
						
						15.0  | 
						
						2.718 | 
						  | 
						
						69.04  | 
						
						  | 
						
						-2.3  | 
						  | 
					
					
						| 
						18 | 
						
						364 | 
						
						 Old Ga 3 | 
						
						56.5 | 
						
						20.3 | 
						
						0.591  | 
						
						15.0  | 
						
						2.835 | 
						
						  | 
						
						72.01  | 
						
						  | 
						
						1.9  | 
						  | 
					
					
						| 
						18 | 
						
						365 | 
						
						 Fm Gauge | 
						
						39.4 | 
						
						20.3 | 
						
						0.591  | 
						
						15.0  | 
						
						1.949 | 
						  | 
						
						49.50  | 
						
						  | 
						
						0.4  | 
						
						Ga.2 | 
					
					
						| 
						18 | 
						
						366 | 
						
						 2" Gauge | 
						
						39.4 | 
						
						20.3 | 
						
						0.591  | 
						
						15.0  | 
						
						2.000 | 
						  | 
						
						50.80  | 
						
						  | 
						
						3.0  | 
						
						Ga.2 | 
					
					
						| 
						18 | 
						
						367 | 
						
						 Gauge 2 | 
						
						39.4 | 
						
						20.3 | 
						
						0.591  | 
						
						15.0  | 
						
						2.000 | 
						  | 
						
						50.80  | 
						
						  | 
						
						3.0  | 
						
						Ga.2 | 
					
					
						| 
						18 | 
						
						368 | 
						
						 Fn3 Gauge | 
						
						36 | 
						
						20.3 | 
						
						0.591  | 
						
						15.0  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-0.4  | 
						
						Ga.1 | 
					
					
						| 
						18 | 
						
						369 | 
						
						 LS20.3 Gauge | 
						
						36 | 
						
						20.3 | 
						
						0.591  | 
						
						15.0  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-0.4  | 
						
						Ga.1 | 
					
					
						| 
						18 | 
						
						370 | 
						
						 45 mm Gauge | 
						
						36 | 
						
						20.3 | 
						
						0.591  | 
						
						15.0  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-0.4  | 
						
						Ga.1 | 
					
					
						| 
						18 | 
						
						371 | 
						
						 1-3/4" Ga | 
						
						36 | 
						
						20.3 | 
						
						0.591  | 
						
						15.0  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-0.4  | 
						
						Ga.1 | 
					
					
						| 
						18 | 
						
						372 | 
						
						 Gauge 1 | 
						
						36 | 
						
						20.3 | 
						
						0.591  | 
						
						15.0  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-0.4  | 
						
						Ga.1 | 
					
					
						| 
						18 | 
						
						372a | 
						
						 SM45 Fauce | 
						
						36 | 
						
						20.3 | 
						
						0.591  | 
						
						15.0  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-0.4  | 
						
						Ga.1 | 
					
					
						| 
						18 | 
						
						373 | 
						
						 20.3 / 45 Ga | 
						
						36 | 
						
						20.3 | 
						
						0.591  | 
						
						15.0  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-0.4  | 
						
						Ga.1 | 
					
					
						| 
						18 | 
						
						374 | 
						
						 Fn30 Gauge | 
						
						30 | 
						
						20.3 | 
						
						0.591  | 
						
						15.0  | 
						
						1.476 | 
						  | 
						
						37.49  | 
						  | 
						
						-0.1  | 
						  | 
					
					
						| 
						18 | 
						
						375 | 
						
						 Fn2 Gauge | 
						
						24 | 
						
						20.3 | 
						
						0.591  | 
						
						15.0  | 
						
						1.181 | 
						  | 
						
						30.00  | 
						  | 
						
						-0.1  | 
						
						Ostd  | 
					
					
						| 
						18 | 
						
						376 | 
						
						 1-1/4" Ga | 
						
						24 | 
						
						20.3 | 
						
						0.591  | 
						
						15.0  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.6 | 
						
						5.7  | 
						
						Ostd  | 
					
					
						| 
						18 | 
						
						376a | 
						
						 SM32 Gausge | 
						
						24 | 
						
						20.3 | 
						
						0.591  | 
						
						15.0  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.6 | 
						
						5.7  | 
						
						Ostd  | 
					
					
						| 
						18 | 
						
						377 | 
						
						 O Ga USA | 
						
						24 | 
						
						20.3 | 
						
						0.591  | 
						
						15.0  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.6 | 
						
						5.7  | 
						
						Ostd  | 
					
					
						| 
						  | 
						  | 
						  | 
						  | 
					
					
						| 
						This is a popular fine scale and
						is slowly replacing G Scale as the North American | 
					
					
						| 
						scale for 3 foot narrow gauge on
						45 mm track. Numerous parts and supplies are | 
						  | 
					
					
						| 
						available. for both live steam and
						electric powered models. Some autos are made in | 
						  | 
					
					
						| 
						this scale. Some earlier models
						were made to 1:20 scale. | 
					
					
						| 
						  | 
						
						  | 
					
					
						| 
						Crain's Scale / Gauge Encyclopedia | 
					
					
						| 
						19 | 
						
						Scale Name: | 
						
						 14 mm Scale | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
					
					
						| 
						  | 
						
						Scale Ratio: | 
						
						 1:21.8 | 
						  | 
						  | 
					
					
						| 
						  | 
						
						Alternate Names: | 
						
						 14 mm = 1 foot | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
					
					
						| 
						  | 
						
						  | 
						
						 Represented  | 
						
						  | 
						
						Scale | 
						
						      Model Track Gauge | 
						
						Error | 
						
						 Track | 
					
					
						| 
						  | 
						
						Ser #   | 
						
						  Gauge | 
						
						 Inches | 
						
						Ratio | 
						
						  In/ft | 
						
						 mm/ft | 
						
						      Inches | 
						
						          mm | 
						
						% | 
						
						 Used | 
					
					
						| 
						  | 
						
						Correct G auge:  | 
						  | 
						  | 
						
						  | 
					
					
						| 
						19 | 
						
						378 | 
						
						 4ft 8.5in | 
						
						56.5 | 
						
						21.8 | 
						
						0.550  | 
						
						14.0  | 
						
						2.592  | 
						  | 
						
						65.83  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						19 | 
						
						379 | 
						
						 Meter | 
						
						39.4 | 
						
						21.8 | 
						
						0.550  | 
						
						14.0  | 
						
						1.807  | 
						  | 
						
						45.91  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						19 | 
						
						380 | 
						
						 3 Foot | 
						
						36 | 
						
						21.8 | 
						
						0.550  | 
						
						14.0  | 
						
						1.651  | 
						  | 
						
						41.94  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						19 | 
						
						381 | 
						
						 2.5 Foot | 
						
						30 | 
						
						21.8 | 
						
						0.550  | 
						
						14.0  | 
						
						1.376  | 
						  | 
						
						34.95  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						19 | 
						
						382 | 
						
						 2 Foot | 
						
						24 | 
						
						21.8 | 
						
						0.550  | 
						
						14.0  | 
						
						1.101  | 
						  | 
						
						27.96  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						19 | 
						
						383 | 
						
						 15 Inch | 
						
						15 | 
						
						21.8 | 
						
						0.550  | 
						
						14.0  | 
						
						0.688  | 
						  | 
						
						17.48  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						  | 
						
						Commonly Used Gauges | 
						  | 
						  | 
						  | 
						  | 
					
					
						| 
						19 | 
						
						384 | 
						
						 2-7/8" Ga | 
						
						60 | 
						
						21.8 | 
						
						0.550  | 
						
						14.0  | 
						
						2.875 | 
						  | 
						
						73.03  | 
						
						  | 
						
						4.5  | 
						  | 
					
					
						| 
						19 | 
						
						385 | 
						
						 Old Ga 3 | 
						
						56.5 | 
						
						21.8 | 
						
						0.550  | 
						
						14.0  | 
						
						2.835 | 
						
						  | 
						
						72.01  | 
						
						  | 
						
						9.4  | 
						  | 
					
					
						| 
						19 | 
						
						386 | 
						
						 2-1/2" Ga | 
						
						56.5 | 
						
						21.8 | 
						
						0.550  | 
						
						14.0  | 
						
						2.500 | 
						
						2.566 | 
						
						63.50  | 
						
						65.18  | 
						
						-3.5  | 
						
						Ga.3  | 
					
					
						| 
						19 | 
						
						387 | 
						
						 Gauge 3 | 
						
						56.5 | 
						
						21.8 | 
						
						0.550  | 
						
						14.0  | 
						
						2.500 | 
						
						2.566 | 
						
						63.50  | 
						
						65.18  | 
						
						-3.5  | 
						
						Ga.3  | 
					
					
						| 
						19 | 
						
						388 | 
						
						 1-3/4" Ga | 
						
						39.4 | 
						
						21.8 | 
						
						0.550  | 
						
						14.0  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-2.3  | 
						
						Ga.1 | 
					
					
						| 
						19 | 
						
						389 | 
						
						 Gauge 1 | 
						
						39.4 | 
						
						21.8 | 
						
						0.550  | 
						
						14.0  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-2.3  | 
						
						Ga.1 | 
					
					
						| 
						19 | 
						
						390 | 
						
						 21.8 / 45 Ga | 
						
						39.4 | 
						
						21.8 | 
						
						0.550  | 
						
						14.0  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-2.3  | 
						
						Ga.1 | 
					
					
						| 
						19 | 
						
						391 | 
						
						 1-3/4" Ga | 
						
						36 | 
						
						21.8 | 
						
						0.550  | 
						
						14.0  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						6.9  | 
						
						Ga.1 | 
					
					
						| 
						19 | 
						
						392 | 
						
						 Gauge 1 | 
						
						36 | 
						
						21.8 | 
						
						0.550  | 
						
						14.0  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						6.9  | 
						
						Ga.1 | 
					
					
						| 
						19 | 
						
						393 | 
						
						 21.8 / 45 Ga | 
						
						36 | 
						
						21.8 | 
						
						0.550  | 
						
						14.0  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						6.9  | 
						
						Ga.1 | 
					
					
						| 
						19 | 
						
						394 | 
						
						 1-1/4" Ga | 
						
						30 | 
						
						21.8 | 
						
						0.550  | 
						
						14.0  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						-9.2  | 
						
						Ostd  | 
					
					
						| 
						19 | 
						
						395 | 
						
						 O Ga USA | 
						
						30 | 
						
						21.8 | 
						
						0.550  | 
						
						14.0  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						-9.2  | 
						
						Ostd  | 
					
					
						| 
						19 | 
						
						396 | 
						
						 On Gauge | 
						
						30 | 
						
						21.8 | 
						
						0.550  | 
						
						14.0  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						-9.2  | 
						
						Ostd  | 
					
					
						| 
						  | 
						  | 
						  | 
						  | 
					
					
						| 
						Many toy trains from the early
						1900's are made to approximately this scale. | 
					
					
						| 
						Some current models are also
						available and are interchangeable with G Scale | 
						  | 
					
					
						| 
						equipment. Scale models (live
						steam) were also common in early 1900's. | 
					
					
						| 
						  | 
						
						  | 
					
					
						| 
						Crain's Scale / Gauge Encyclopedia | 
					
					
						| 
						20 | 
						
						Scale Name: | 
						
						 G Scale   IIm
						Scale (1:22.5)  | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
					
					
						| 
						  | 
						
						Scale Ratio: | 
						
						 1:22.6 | 
						  | 
						  | 
					
					
						| 
						  | 
						
						Alternate Names: | 
						
						 17/32 Inch Scale | 
						
						13.5 mm Scale | 
						
						 1:22.6 Scale | 
						
						 | 
					
					
						| 
						  | 
						
						  | 
						
						  | 
						
						 II Scale (in Europe) | 
						
						   LGB Scale (bad usage) | 
						
						  | 
						
						  | 
						
						  | 
					
					
						| 
						  | 
						
						  | 
						
						 Represented  | 
						
						Scale | 
						
						      Model Track Gauge | 
						
						Error | 
						
						 Track | 
					
					
						| 
						  | 
						
						Ser #   | 
						
						  Gauge | 
						
						 Inches | 
						
						Ratio | 
						
						  In/ft | 
						
						 mm/ft | 
						
						      Inches | 
						
						          mm | 
						
						% | 
						
						 Used | 
					
					
						| 
						  | 
						
						Correct Gauge: | 
						  | 
						  | 
						
						  | 
					
					
						| 
						20 | 
						
						397 | 
						
						 4ft 8.5in | 
						
						56.5 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						2.500  | 
						  | 
						
						63.50  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						20 | 
						
						398 | 
						
						 Meter | 
						
						39.4 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.743  | 
						  | 
						
						44.28  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						20 | 
						
						399 | 
						
						 3 Foot | 
						
						36 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.593  | 
						  | 
						
						40.46  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						20 | 
						
						400 | 
						
						 2.5 Foot | 
						
						30 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.327  | 
						  | 
						
						33.72  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						20 | 
						
						401 | 
						
						 2 Foot | 
						
						24 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.062  | 
						  | 
						
						26.97  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						20 | 
						
						402 | 
						
						 15 Inch | 
						
						15 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						0.664  | 
						  | 
						
						16.86  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						  | 
						
						Commonly Used Gauges | 
						
						  | 
						  | 
						  | 
						  | 
					
					
						| 
						20 | 
						
						403 | 
						
						 Spur II | 
						
						56.5 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						2.519  | 
						  | 
						
						63.98  | 
						  | 
						
						0.8  | 
						
						G Ga | 
					
					
						| 
						20 | 
						
						404 | 
						
						 2-1/2" Ga | 
						
						56.5 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						2.500  | 
						
						2.566  | 
						
						63.50  | 
						
						65.18  | 
						
						0.0  | 
						
						Ga.3 | 
					
					
						| 
						20 | 
						
						405 | 
						
						 Gauge 3 | 
						
						56.5 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						2.500  | 
						
						2.566  | 
						
						63.50  | 
						
						65.18  | 
						
						0.0  | 
						
						Ga.3 | 
					
					
						| 
						20 | 
						
						406 | 
						
						 2-3/8" Ga | 
						
						56.5 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						2.375  | 
						  | 
						
						60.33  | 
						  | 
						
						-5.0  | 
						  | 
					
					
						| 
						20 | 
						
						407 | 
						
						 2-1/8" Ga | 
						
						56.5 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						2.125  | 
						  | 
						
						53.98  | 
						  | 
						
						-15.0  | 
						  | 
					
					
						| 
						20 | 
						
						408 | 
						
						 LS22.5 Gauge | 
						
						39.4 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.766  | 
						
						1.820  | 
						
						44.86  | 
						
						46.23  | 
						
						1.3  | 
						
						Ga.1 | 
					
					
						| 
						20 | 
						
						409 | 
						
						 45 mm Gauge | 
						
						39.4 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.766  | 
						
						1.820  | 
						
						44.86  | 
						
						46.23  | 
						
						1.3  | 
						
						Ga.1 | 
					
					
						| 
						20 | 
						
						410 | 
						
						 LBM Gauge | 
						
						39.4 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.766  | 
						
						1.820  | 
						
						44.86  | 
						
						46.23  | 
						
						1.3  | 
						
						Ga.1 | 
					
					
						| 
						20 | 
						
						411 | 
						
						 I Gauge | 
						
						39.4 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.766  | 
						
						1.820  | 
						
						44.86  | 
						
						46.23  | 
						
						1.3  | 
						
						Ga.1 | 
					
					
						| 
						20 | 
						
						411a | 
						
						 SM45 Gauge | 
						
						39.4 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.766  | 
						
						1.820  | 
						
						44.86  | 
						
						46.23  | 
						
						1.3  | 
						
						Ga.1 | 
					
					
						| 
						20 | 
						
						412 | 
						
						 #1 Gauge | 
						
						39.4 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.766  | 
						
						1.820  | 
						
						44.86  | 
						
						46.23  | 
						
						1.3  | 
						
						Ga.1 | 
					
					
						| 
						20 | 
						
						413 | 
						
						 IIm Gauge | 
						
						39.4 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.766  | 
						
						1.820  | 
						
						44.86  | 
						
						46.23  | 
						
						1.3  | 
						
						Ga.1 | 
					
					
						| 
						20 | 
						
						414 | 
						
						 G Gauge ** | 
						
						39.4 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.766  | 
						
						1.820  | 
						
						44.86  | 
						
						46.23  | 
						
						1.3  | 
						
						Ga.1 | 
					
					
						| 
						20 | 
						
						415 | 
						
						 LGB Gauge | 
						
						39.4 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.766  | 
						
						1.820  | 
						
						44.86  | 
						
						46.23  | 
						
						1.3  | 
						
						Ga.1 | 
					
					
						| 
						20 | 
						
						416 | 
						
						 G-45 Gauge | 
						
						39.4 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.766  | 
						
						1.820  | 
						
						44.86  | 
						
						46.23  | 
						
						1.3  | 
						
						Ga.1 | 
					
					
						| 
						20 | 
						
						417 | 
						
						 1-3/4" Ga | 
						
						39.4 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.766  | 
						
						1.820  | 
						
						44.86  | 
						
						46.23  | 
						
						1.3  | 
						
						Ga.1 | 
					
					
						| 
						20 | 
						
						418 | 
						
						 Gauge 1 | 
						
						39.4 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.766  | 
						
						1.820  | 
						
						44.86  | 
						
						46.23  | 
						
						1.3  | 
						
						Ga.1 | 
					
					
						| 
						20 | 
						
						419 | 
						
						 Gm Gauge | 
						
						39.4 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.766  | 
						
						1.820  | 
						
						44.86  | 
						
						46.23  | 
						
						1.3  | 
						
						Ga.1 | 
					
					
						| 
						20 | 
						
						420 | 
						
						 Gnm Gauge | 
						
						39.4 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.766  | 
						
						1.820  | 
						
						44.86  | 
						
						46.23  | 
						
						1.3  | 
						
						Ga.1 | 
					
					
						| 
						20 | 
						
						421 | 
						
						 22.6 / 45 Ga | 
						
						39.4 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.766  | 
						
						1.820  | 
						
						44.86  | 
						
						46.23  | 
						
						1.3  | 
						
						Ga.1 | 
					
					
						| 
						20 | 
						
						422 | 
						
						 LS22.5 Gauge | 
						
						36 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.766  | 
						
						1.820  | 
						
						44.86  | 
						
						46.23  | 
						
						10.9  | 
						
						Ga.1 | 
					
					
						| 
						20 | 
						
						423 | 
						
						 45 mm Gauge | 
						
						36 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.766  | 
						
						1.820  | 
						
						44.86  | 
						
						46.23  | 
						
						10.9  | 
						
						Ga.1 | 
					
					
						| 
						20 | 
						
						424 | 
						
						 LBM Gauge | 
						
						36 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.766  | 
						
						1.820  | 
						
						44.86  | 
						
						46.23  | 
						
						10.9  | 
						
						Ga.1 | 
					
					
						| 
						20 | 
						
						425 | 
						
						 I Gauge | 
						
						36 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.766  | 
						
						1.820  | 
						
						44.86  | 
						
						46.23  | 
						
						10.9  | 
						
						Ga.1 | 
					
					
						| 
						20 | 
						
						426 | 
						
						 #1 Gauge | 
						
						36 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.766  | 
						
						1.820  | 
						
						44.86  | 
						
						46.23  | 
						
						10.9  | 
						
						Ga.1 | 
					
					
						| 
						20 | 
						
						427 | 
						
						 IIm Gauge | 
						
						36 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.766  | 
						
						1.820  | 
						
						44.86  | 
						
						46.23  | 
						
						10.9  | 
						
						Ga.1 | 
					
					
						| 
						20 | 
						
						428 | 
						
						 G Gauge ** | 
						
						36 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.766  | 
						
						1.820  | 
						
						44.86  | 
						
						46.23  | 
						
						10.9  | 
						
						Ga.1 | 
					
					
						| 
						20 | 
						
						429 | 
						
						 LGB Gauge | 
						
						36 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.766  | 
						
						1.820  | 
						
						44.86  | 
						
						46.23  | 
						
						10.9  | 
						
						Ga.1 | 
					
					
						| 
						20 | 
						
						430 | 
						
						 G-45 Gauge | 
						
						36 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.766  | 
						
						1.820  | 
						
						44.86  | 
						
						46.23  | 
						
						10.9  | 
						
						Ga.1 | 
					
					
						| 
						20 | 
						
						431 | 
						
						 1-3/4" Ga | 
						
						36 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.766  | 
						
						1.820  | 
						
						44.86  | 
						
						46.23  | 
						
						10.9  | 
						
						Ga.1 | 
					
					
						| 
						20 | 
						
						432 | 
						
						 G1 Gauge | 
						
						36 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.766  | 
						
						1.820  | 
						
						44.86  | 
						
						46.23  | 
						
						10.9  | 
						
						Ga.1 | 
					
					
						| 
						20 | 
						
						433 | 
						
						 Gauge 1 | 
						
						36 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.766  | 
						
						1.820  | 
						
						44.86  | 
						
						46.23  | 
						
						10.9  | 
						
						Ga.1 | 
					
					
						| 
						20 | 
						
						434 | 
						
						 Gn3 Gauge | 
						
						36 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.614  | 
						  | 
						
						41.00  | 
						
						  | 
						
						1.3  | 
						  | 
					
					
						| 
						20 | 
						
						435 | 
						
						 22.6 / 45 Ga | 
						
						36 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.614  | 
						  | 
						
						41.00  | 
						
						  | 
						
						1.3  | 
						  | 
					
					
						| 
						20 | 
						
						436 | 
						
						 Gn2.5 Ga | 
						
						30 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.259  | 
						  | 
						
						31.98  | 
						
						  | 
						
						-5.2  | 
						
						Ostd | 
					
					
						| 
						20 | 
						
						437 | 
						
						 SM32 Gauge | 
						
						30 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.250  | 
						
						1.285  | 
						
						31.75  | 
						
						32.6 | 
						
						-5.8  | 
						
						Ostd | 
					
					
						| 
						20 | 
						
						438 | 
						
						 G.O Gauge | 
						
						30 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.250  | 
						
						1.285  | 
						
						31.75  | 
						
						32.6 | 
						
						-5.8  | 
						
						Ostd | 
					
					
						| 
						20 | 
						
						439 | 
						
						 1-1/4" Ga | 
						
						30 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.250  | 
						
						1.285  | 
						
						31.75  | 
						
						32.6 | 
						
						-5.8  | 
						
						Ostd | 
					
					
						| 
						20 | 
						
						440 | 
						
						 O Ga USA | 
						
						30 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.250  | 
						
						1.285  | 
						
						31.75  | 
						
						32.6 | 
						
						-5.8  | 
						
						Ostd | 
					
					
						| 
						20 | 
						
						440a | 
						
						 AM32 Gauge | 
						
						30 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.250  | 
						
						1.285  | 
						
						31.75  | 
						
						32.6 | 
						
						-5.8  | 
						
						Ostd | 
					
					
						| 
						20 | 
						
						441 | 
						
						 IIe Gauge | 
						
						30 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.250  | 
						
						1.285  | 
						
						31.75  | 
						
						32.6 | 
						
						-5.8  | 
						
						Ostd | 
					
					
						| 
						20 | 
						
						442 | 
						
						 G.O 3-Rail | 
						
						30 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.250  | 
						
						1.280  | 
						
						31.75  | 
						
						32.5 | 
						
						-5.8  | 
						
						Lionel | 
					
					
						| 
						20 | 
						
						443 | 
						
						 Gm750 Ga | 
						
						29.5 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.250  | 
						
						1.285  | 
						
						31.75  | 
						
						32.6 | 
						
						-4.2  | 
						
						Ostd | 
					
					
						| 
						20 | 
						
						444 | 
						
						 Ge Gauge | 
						
						29.5 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.250  | 
						
						1.285  | 
						
						31.75  | 
						
						32.6 | 
						
						-4.2  | 
						
						Ostd | 
					
					
						| 
						20 | 
						
						445 | 
						
						 O Ga USA | 
						
						29.5 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.250  | 
						
						1.285  | 
						
						31.75  | 
						
						32.6 | 
						
						-4.2  | 
						
						Ostd | 
					
					
						| 
						20 | 
						
						446 | 
						
						 IIe Gauge | 
						
						29.5 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.250  | 
						
						1.285  | 
						
						31.75  | 
						
						32.6 | 
						
						-4.2  | 
						
						Ostd | 
					
					
						| 
						20 | 
						
						447 | 
						
						 On Gauge | 
						
						29.5 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.250  | 
						
						1.285  | 
						
						31.75  | 
						
						32.6 | 
						
						-4.2  | 
						
						Ostd | 
					
					
						| 
						20 | 
						
						448 | 
						
						 Gauge 1 | 
						
						24 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.766  | 
						
						1.820  | 
						
						44.86  | 
						
						46.2 | 
						
						66.3  | 
						
						Ga.1 | 
					
					
						| 
						20 | 
						
						449 | 
						
						 Gn2 Gauge | 
						
						24 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						1.062  | 
						  | 
						
						26.97  | 
						
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						20 | 
						
						450 | 
						
						 Gn20 Gauge | 
						
						20 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						0.885  | 
						  | 
						
						22.48  | 
						
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						20 | 
						
						451 | 
						
						 S Gauge | 
						
						20 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						0.875  | 
						
						0.898  | 
						
						22.23  | 
						
						22.8 | 
						
						-1.1  | 
						
						Sstd | 
					
					
						| 
						20 | 
						
						452 | 
						
						 Gn18 Gauge | 
						
						18 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						0.796  | 
						  | 
						
						20.22  | 
						
						  | 
						
						-0.1  | 
						  | 
					
					
						| 
						20 | 
						
						453 | 
						
						 Gn15 Gauge | 
						
						15 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						0.664  | 
						  | 
						
						16.87  | 
						
						  | 
						
						0.0  | 
						
						HOstd | 
					
					
						| 
						20 | 
						
						454 | 
						
						 HO Gauge | 
						
						15 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						0.649  | 
						
						0.672  | 
						
						16.48  | 
						
						17.1 | 
						
						-2.2  | 
						
						HOstd | 
					
					
						| 
						20 | 
						
						455 | 
						
						 HO-M Gauge | 
						
						15 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						0.649  | 
						
						0.672  | 
						
						16.48  | 
						
						17.1 | 
						
						-2.2  | 
						
						HOstd | 
					
					
						| 
						20 | 
						
						456 | 
						
						 Gn7.5 Gauge | 
						
						7.5 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						0.353  | 
						
						0.367  | 
						
						8.97  | 
						
						9.32 | 
						
						6.4  | 
						
						Nstd | 
					
					
						| 
						20 | 
						
						456a | 
						
						 Gnine Gauge | 
						
						7.5 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						0.353  | 
						
						0.367  | 
						
						8.97  | 
						
						9.32 | 
						
						6.4  | 
						
						Nstd | 
					
					
						| 
						20 | 
						
						456b | 
						
						 G9 Gauge | 
						
						7.5 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						0.353  | 
						
						0.367  | 
						
						8.97  | 
						
						9.32 | 
						
						6.4  | 
						
						Nstd | 
					
					
						| 
						20 | 
						
						457 | 
						
						 N Gauge | 
						
						7.5 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						0.353  | 
						
						0.367  | 
						
						8.97  | 
						
						9.32 | 
						
						6.4  | 
						
						Nstd | 
					
					
						| 
						20 | 
						
						458 | 
						
						 9 mm Gauge | 
						
						7.5 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						0.353  | 
						
						0.367  | 
						
						8.97  | 
						
						9.32 | 
						
						6.4  | 
						
						Nstd | 
					
					
						| 
						20 | 
						
						459 | 
						
						 Gn5 Ga | 
						
						5 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						0.257  | 
						
						0.270  | 
						
						6.53  | 
						
						6.86 | 
						
						16.2  | 
						
						Zstd | 
					
					
						| 
						20 | 
						
						460 | 
						
						 Z Gauge | 
						
						5 | 
						
						22.6 | 
						
						0.531  | 
						
						13.5  | 
						
						0.257  | 
						
						0.270  | 
						
						6.53  | 
						
						6.86 | 
						
						16.2  | 
						
						Zstd | 
					
					
						| 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
					
					
						| 
						The latter two gauges could be
						used to model a garden railway on a garden | 
						  | 
					
					
						| 
						railway. The "G" in G Scale comes
						from the German word Grosse, or Large, but | 
						  | 
					
					
						| 
						is also taken to be "G" for
						Garden. This is the most popular garden railway | 
					
					
						| 
						scale, as a large amount of
						equipment and track is available. Confusion exists | 
						  | 
					
					
						| 
						in the advertising of these
						products. Many use the words "LGB Compatible" to | 
						  | 
					
					
						| 
						mean that the equipment can run on
						LGB or Gauge 1 track. However, the scale | 
						  | 
					
					
						| 
						can be anywhere from 1:32
						(standard gauge) to 1:4.8 (15" narrow gauge).  Some | 
						  | 
					
					
						| 
						references give the scale as
						1:22.5 instead of 1:22.6. Tens of thousands of | 
					
					
						| 
						modelers use Gauge 1 track to
						represent 3 Foot Gauge even though the track is | 
						  | 
					
					
						| 
						10% too wide. Some Maine 2 foot
						gauge models are sold for Gauge 1 track also. | 
						  | 
					
					
						| 
						17/32" Scale on Gauge 3 track was
						popular in early 1900's and is regaining popularity. | 
						  | 
					
					
						| 
						** The use of "G Gauge" for Gauge
						1 track is very common but incorrect. | 
						  | 
					
					
						| 
						  | 
						
						  | 
					
					
						| 
						Crain's Scale / Gauge Encyclopedia | 
					
					
						| 
						21 | 
						
						Scale Name: | 
						
						 H Scale | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
					
					
						| 
						  | 
						
						Scale Ratio: | 
						
						 1:24 | 
						  | 
						  | 
					
					
						| 
						  | 
						
						Alternate Names: | 
						
						 1/2 Inch Scale | 
						
						12.7 mm Scale | 
						
						 1:24 Scale | 
						  | 
						  | 
					
					
						| 
						  | 
						
						  | 
						
						  | 
						
						 Number 3 Scale | 
						
						  1/2 inch = 1 foot | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
					
					
						| 
						  | 
						
						  | 
						
						 Represented  | 
						
						  | 
						
						Scale | 
						
						      Model Track Gauge | 
						
						Error | 
						
						 Track | 
					
					
						| 
						  | 
						
						Ser #   | 
						
						 Gauge | 
						
						 Inches | 
						
						Ratio | 
						
						  In/ft | 
						
						 mm/ft | 
						
						      Inches | 
						
						          mm | 
						
						% | 
						
						 Used | 
					
					
						| 
						  | 
						
						Correct Gauge: | 
						  | 
						  | 
						
						  | 
					
					
						| 
						21 | 
						
						461 | 
						
						 4ft 8.5in | 
						
						56.5 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						2.354  | 
						  | 
						
						59.80  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						21 | 
						
						462 | 
						
						 Meter | 
						
						39.4 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						1.642  | 
						  | 
						
						41.70  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						21 | 
						
						463 | 
						
						 3 Foot | 
						
						36 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						1.500  | 
						  | 
						
						38.10  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						21 | 
						
						464 | 
						
						 2.5 Foot | 
						
						30 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						1.250  | 
						  | 
						
						31.75  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						21 | 
						
						465 | 
						
						 2 Foot | 
						
						24 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						1.000  | 
						  | 
						
						25.40  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						21 | 
						
						466 | 
						
						 15 Inch | 
						
						15 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						0.625  | 
						  | 
						
						15.88  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						  | 
						
						Commonly Used Gauges | 
						
						  | 
					
					
						| 
						21 | 
						
						467 | 
						
						 Old Ga 3 | 
						
						66 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						2.835 | 
						
						  | 
						
						72.01  | 
						
						  | 
						
						3.1  | 
						
						Ga.3 | 
					
					
						| 
						21 | 
						
						468 | 
						
						 2-1/2" Ga | 
						
						56.5 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						2.500 | 
						
						2.566 | 
						
						63.50  | 
						
						65.18  | 
						
						6.2  | 
						
						Ga.3 | 
					
					
						| 
						21 | 
						
						469 | 
						
						 Gauge 3 | 
						
						56.5 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						2.500 | 
						
						2.566 | 
						
						63.50  | 
						
						65.18  | 
						
						6.2  | 
						
						Ga.3 | 
					
					
						| 
						21 | 
						
						470 | 
						
						 Gauge II | 
						
						56.5 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						2.500 | 
						
						2.566 | 
						
						63.50  | 
						
						65.18  | 
						
						6.2  | 
						
						Ga.3 | 
					
					
						| 
						21 | 
						
						471 | 
						
						 2-3/8" Ga | 
						
						56.5 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						2.375 | 
						  | 
						
						60.33  | 
						  | 
						
						0.9  | 
						  | 
					
					
						| 
						21 | 
						
						472 | 
						
						 Proto 24 | 
						
						56.5 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						2.354 | 
						
						2.409 | 
						
						59.79  | 
						
						61.19  | 
						
						0.0  | 
						  | 
					
					
						| 
						21 | 
						
						473 | 
						
						 H Gauge | 
						
						56.5 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						2.354 | 
						
						2.409 | 
						
						59.79  | 
						
						61.19  | 
						
						0.0  | 
						  | 
					
					
						| 
						21 | 
						
						474 | 
						
						 Hn42 Gauge | 
						
						42 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						0.9  | 
						
						Ga.1 | 
					
					
						| 
						21 | 
						
						475 | 
						
						 Hn3.5 Gauge | 
						
						42 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						0.9  | 
						
						Ga.1 | 
					
					
						| 
						21 | 
						
						475a | 
						
						 SM45 Gauge | 
						
						42 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						0.9  | 
						
						Ga.1 | 
					
					
						| 
						21 | 
						
						475b | 
						
						 Gauge
						1 | 
						
						42 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						0.9  | 
						
						Ga.1 | 
					
					
						| 
						21 | 
						
						476 | 
						
						 1/2"n42 Gauge | 
						
						42 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						0.9  | 
						
						Ga.1 | 
					
					
						| 
						21 | 
						
						477 | 
						
						  1-1/2 " Gauge | 
						
						42 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						1.500 | 
						
						1.820 | 
						
						38.10  | 
						
						46.23  | 
						
						-14.3  | 
						
						Ga.1 | 
					
					
						| 
						21 | 
						
						478 | 
						
						 Hm Gauge | 
						
						39.4 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						1.614 | 
						  | 
						
						41.00  | 
						  | 
						
						-1.7  | 
						
						Ga.1 | 
					
					
						| 
						21 | 
						
						479 | 
						
						 1/2"m Ga | 
						
						39.4 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						1.614 | 
						  | 
						
						41.00  | 
						  | 
						
						-1.7  | 
						
						Ga.1 | 
					
					
						| 
						21 | 
						
						480 | 
						
						 LS24 Gauge | 
						
						39.4 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						7.6  | 
						
						Ga.1 | 
					
					
						| 
						21 | 
						
						481 | 
						
						 45 mm Gauge | 
						
						39.4 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						7.6  | 
						
						Ga.1 | 
					
					
						| 
						21 | 
						
						482 | 
						
						 Gauge 1 | 
						
						39.4 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						7.6  | 
						
						Ga.1 | 
					
					
						| 
						21 | 
						
						483 | 
						
						 24 / 45 Ga | 
						
						39.4 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						7.6  | 
						
						Ga.1 | 
					
					
						| 
						21 | 
						
						484 | 
						
						 Hn3 Gauge | 
						
						36 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						1.476 | 
						  | 
						
						37.49  | 
						  | 
						
						-1.6  | 
						  | 
					
					
						| 
						21 | 
						
						485 | 
						
						 1/2"n3 Ga | 
						
						36 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						1.500 | 
						
						1.555 | 
						
						38.10  | 
						
						39.50  | 
						
						0.0  | 
						  | 
					
					
						| 
						21 | 
						
						486 | 
						
						 Proto 24n3 | 
						
						36 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						1.500 | 
						
						1.555 | 
						
						38.10  | 
						
						39.50  | 
						
						0.0  | 
						  | 
					
					
						| 
						21 | 
						
						487 | 
						
						 Hn2.5 Ga | 
						
						30 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						0.0  | 
						
						Ostd | 
					
					
						| 
						21 | 
						
						488 | 
						
						 1/2"n2.5 Ga | 
						
						30 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						0.0  | 
						
						Ostd | 
					
					
						| 
						21 | 
						
						489 | 
						
						 1-1/4" Ga | 
						
						30 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						0.0  | 
						
						Ostd | 
					
					
						| 
						21 | 
						
						490 | 
						
						 O Ga USA | 
						
						30 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						0.0  | 
						
						Ostd | 
					
					
						| 
						21 | 
						
						490a | 
						
						 SM32 Gauge | 
						
						30 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						0.0  | 
						
						Ostd | 
					
					
						| 
						21 | 
						
						491 | 
						
						 On Gauge | 
						
						30 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						0.0  | 
						
						Ostd | 
					
					
						| 
						21 | 
						
						492 | 
						
						 1/2"n15 Ga | 
						
						15 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						0.649 | 
						
						0.672 | 
						
						16.48  | 
						
						17.07  | 
						
						3.8  | 
						
						HOstd | 
					
					
						| 
						21 | 
						
						493 | 
						
						 HO Gauge | 
						
						15 | 
						
						24 | 
						
						0.500  | 
						
						12.7  | 
						
						0.649 | 
						
						0.672 | 
						
						16.48  | 
						
						17.07  | 
						
						3.8  | 
						
						HOstd | 
					
					
						| 
						  | 
						  | 
					
					
						| 
						This is a popular scale for live
						steam and electric, indoor and outdoor. It is | 
					
					
						| 
						often considered a fine scale
						version of G Scale. Scale rulers are advertized | 
						  | 
					
					
						| 
						at 1:24 and 1:25 scale, but only
						automobile models are available at 1:25. | 
						  | 
					
					
						| 
						Even in the early 1900's, there
						was controversy between 1:22.6 and 1:24 Scales | 
						  | 
					
					
						| 
						(17/32" and 1/2" Scales) and 2.5" or 2.375" track gauge
						- same as today. | 
					
					
						| 
						Crain's Scale / Gauge Encyclopedia | 
					
					
						| 
						22 | 
						
						Scale Name: | 
						
						Number 2 Scale | 
						
						  | 
						
						  | 
						
						  | 
					
					
						| 
						  | 
						
						Scale Ratio: | 
						
						 1:27.4 | 
						  | 
						  | 
					
					
						| 
						  | 
						
						Alternate Names: | 
						
						 7/16 Inch Scale | 
						
						11.1 mm Scale | 
						
						 1:27.4 Scale | 
						
						 | 
					
					
						| 
						  | 
						
						  | 
						
						  | 
						
						 "Standard Gauge"  or "Wide Gauge"
						(used as scale names) | 
					
					
						| 
						  | 
						
						  | 
						
						 Represented  | 
						
						  | 
						
						Scale | 
						
						      Model Track Gauge | 
						
						Error | 
						
						 Track | 
					
					
						| 
						  | 
						
						Ser #   | 
						
						  Gauge | 
						
						 Inches | 
						
						Ratio | 
						
						  In/ft | 
						
						 mm/ft | 
						
						      Inches | 
						
						          mm | 
						
						% | 
						
						 Used | 
					
					
						| 
						  | 
						
						Correct Gauge: | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
					
					
						| 
						22 | 
						
						494 | 
						
						 4ft 8.5in | 
						
						56.5 | 
						
						27.4 | 
						
						0.438  | 
						
						11.1  | 
						
						2.062  | 
						  | 
						
						52.38  | 
						  | 
						
						0.0  | 
						
						  | 
					
					
						| 
						22 | 
						
						495 | 
						
						 3 Foot | 
						
						36 | 
						
						27.4 | 
						
						0.438  | 
						
						11.1  | 
						
						1.314  | 
						  | 
						
						33.37  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						22 | 
						
						496 | 
						
						 2.5 Foot | 
						
						30 | 
						
						27.4 | 
						
						0.438  | 
						
						11.1  | 
						
						1.095  | 
						  | 
						
						27.81  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						22 | 
						
						497 | 
						
						 2 Foot | 
						
						24 | 
						
						27.4 | 
						
						0.438  | 
						
						11.1  | 
						
						0.876  | 
						  | 
						
						22.25  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						22 | 
						
						498 | 
						
						 15 Inch | 
						
						15 | 
						
						27.4 | 
						
						0.438  | 
						
						11.1  | 
						
						0.547  | 
						  | 
						
						13.91  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						  | 
						
						Commonly Used Gauges | 
						  | 
						  | 
					
					
						| 
						22 | 
						
						499 | 
						
						 Standard Ga | 
						
						56.5 | 
						
						27.4 | 
						
						0.438  | 
						
						11.1  | 
						
						2.125 | 
						  | 
						
						53.98  | 
						
						  | 
						
						3.1  | 
						
						Std Ga | 
					
					
						| 
						22 | 
						
						500 | 
						
						 2-1.2" Gauge | 
						
						56.5 | 
						
						27.4 | 
						
						0.438  | 
						
						11.1  | 
						
						2.500 | 
						  | 
						
						63.50  | 
						
						  | 
						
						21.2  | 
						
						Ga.2 | 
					
					
						| 
						22 | 
						
						501 | 
						
						 2" Gauge | 
						
						56.5 | 
						
						27.4 | 
						
						0.438  | 
						
						11.1  | 
						
						2.000 | 
						  | 
						
						50.80  | 
						
						  | 
						
						-3.0  | 
						
						Ga.2 | 
					
					
						| 
						22 | 
						
						502 | 
						
						 Wide Gauge | 
						
						56.5 | 
						
						27.4 | 
						
						0.438  | 
						
						11.1  | 
						
						2.000 | 
						  | 
						
						50.80  | 
						
						  | 
						
						-3.0  | 
						
						Ga.2 | 
					
					
						| 
						22 | 
						
						503 | 
						
						 Gauge 2 | 
						
						56.5 | 
						
						27.4 | 
						
						0.438  | 
						
						11.1  | 
						
						2.000 | 
						  | 
						
						50.80  | 
						
						  | 
						
						-3.0  | 
						
						Ga.2 | 
					
					
						| 
						22 | 
						
						504 | 
						
						 1-7/8" Ga | 
						
						56.5 | 
						
						27.4 | 
						
						0.438  | 
						
						11.1  | 
						
						1.875 | 
						  | 
						
						47.63  | 
						
						  | 
						
						-9.1  | 
						
						Ga.2 | 
					
					
						| 
						22 | 
						
						505 | 
						
						 No.2n3 Ga | 
						
						36 | 
						
						27.4 | 
						
						0.438  | 
						
						11.1  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						-4.9  | 
						
						Ostd  | 
					
					
						| 
						22 | 
						
						506 | 
						
						 1-1/4" Ga | 
						
						36 | 
						
						27.4 | 
						
						0.438  | 
						
						11.1  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						-4.9  | 
						
						Ostd  | 
					
					
						| 
						22 | 
						
						507 | 
						
						 O Ga USA | 
						
						36 | 
						
						27.4 | 
						
						0.438  | 
						
						11.1  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						-4.9  | 
						
						Ostd  | 
					
					
						| 
						22 | 
						
						508 | 
						
						  7/16n3 Gauge | 
						
						36 | 
						
						27.4 | 
						
						0.438  | 
						
						11.1  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						-4.9  | 
						
						Ostd  | 
					
					
						| 
						22 | 
						
						509 | 
						
						 No.2n2 Ga | 
						
						24 | 
						
						27.4 | 
						
						0.438  | 
						
						11.1  | 
						
						0.875 | 
						
						0.898 | 
						
						22.23  | 
						
						22.81  | 
						
						-0.1  | 
						
						Sstd | 
					
					
						| 
						22 | 
						
						510 | 
						
						 S Gauge | 
						
						24 | 
						
						27.4 | 
						
						0.438  | 
						
						11.1  | 
						
						0.875 | 
						
						0.898 | 
						
						22.23  | 
						
						22.81  | 
						
						-0.1  | 
						
						Sstd | 
					
					
						| 
						22 | 
						
						511 | 
						
						 No.2n18 Ga | 
						
						18 | 
						
						27.4 | 
						
						0.438  | 
						
						11.1  | 
						
						0.649 | 
						
						0.672 | 
						
						16.48  | 
						
						17.07  | 
						
						-1.2  | 
						
						HOstd | 
					
					
						| 
						22 | 
						
						512 | 
						
						 HO Gauge | 
						
						18 | 
						
						27.4 | 
						
						0.438  | 
						
						11.1  | 
						
						0.649 | 
						
						0.672 | 
						
						16.48  | 
						
						17.07  | 
						
						-1.2  | 
						
						HOstd | 
					
					
						| 
						  | 
						  | 
					
					
						| 
						This is a fairly rare scale used
						for toy trains. "Standard Gauge" is a | 
					
					
						| 
						confusing term for a model track
						gauge, but some older toy trains are | 
						  | 
					
					
						| 
						advertized at this gauge,
						"Standard Gauge" trains have scales from :1:26 to 1:28. | 
						  | 
					
					
						| 
						  | 
						  | 
						  | 
					
					
						| 
						"Standard Gauge" (2.125 inch
						gauge) was sometimes called "Gauge 2". The real | 
						  | 
					
					
						| 
						Gauge 2 (2.00 inch gauge) was then
						called "Old Gauge 2". This practice faded | 
						  | 
						  | 
					
					
						| 
						after WWII and Old Gauge 2 became
						Gauge 2 again. Only a little confused??? | 
						  | 
						  | 
					
					
						| 
						  | 
						
						  | 
					
					
						| 
						Crain's Scale / Gauge Encyclopedia | 
					
					
						| 
						23 | 
						
						Scale Name: | 
						
						 A Scale | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
					
					
						| 
						  | 
						
						Scale Ratio: | 
						
						 1:29 | 
						  | 
						  | 
					
					
						| 
						  | 
						
						Alternate Names: | 
						
						 10.5 mm =  1 foot | 
						
						10.5 mm Scale | 
						
						 1:29 Scale | 
						  | 
						  | 
					
					
						| 
						  | 
						
						  | 
						
						  | 
						
						 X Scale was proposed but never
						used | 
						
						  | 
						
						  | 
						
						  | 
					
					
						| 
						  | 
						
						  | 
						
						 Represented  | 
						
						  | 
						
						Scale | 
						
						      Model Track Gauge | 
						
						Error | 
						
						 Track | 
					
					
						| 
						  | 
						
						Ser #   | 
						
						  Gauge | 
						
						 Inches | 
						
						Ratio | 
						
						  In/ft | 
						
						 mm/ft | 
						
						      Inches | 
						
						          mm | 
						
						% | 
						
						 Used | 
					
					
						| 
						  | 
						
						Correct Gauge: | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
					
					
						| 
						23 | 
						
						513 | 
						
						 4ft 8.5in | 
						
						56.5 | 
						
						29 | 
						
						0.414  | 
						
						10.5  | 
						
						1.948  | 
						  | 
						
						49.49  | 
						  | 
						
						0.0  | 
						
						  | 
					
					
						| 
						23 | 
						
						514 | 
						
						 Meter | 
						
						39.4 | 
						
						29 | 
						
						0.414  | 
						
						10.5  | 
						
						1.359  | 
						  | 
						
						34.51  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						23 | 
						
						515 | 
						
						 3 Foot | 
						
						36 | 
						
						29 | 
						
						0.414  | 
						
						10.5  | 
						
						1.241  | 
						  | 
						
						31.53  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						23 | 
						
						516 | 
						
						 2.5 Foot | 
						
						30 | 
						
						29 | 
						
						0.414  | 
						
						10.5  | 
						
						1.034  | 
						  | 
						
						26.28  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						23 | 
						
						517 | 
						
						 2 Foot | 
						
						24 | 
						
						29 | 
						
						0.414  | 
						
						10.5  | 
						
						0.828  | 
						  | 
						
						21.02  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						20 | 
						
						518 | 
						
						 15 Inch | 
						
						15 | 
						
						29 | 
						
						0.414  | 
						
						10.5  | 
						
						0.517  | 
						  | 
						
						13.14  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						  | 
						
						Commonly Used Gauges | 
						
						  | 
					
					
						| 
						23 | 
						
						519 | 
						
						 2" Gauge | 
						
						56.5 | 
						
						29 | 
						
						0.414  | 
						
						10.5  | 
						
						2.000 | 
						  | 
						
						50.80  | 
						
						  | 
						
						2.7  | 
						
						Ga.2 | 
					
					
						| 
						23 | 
						
						520 | 
						
						 Gauge 2 | 
						
						56.5 | 
						
						29 | 
						
						0.414  | 
						
						10.5  | 
						
						2.000 | 
						  | 
						
						50.80  | 
						
						  | 
						
						2.7  | 
						
						Ga.2 | 
					
					
						| 
						23 | 
						
						521 | 
						
						 A Gauge | 
						
						56.5 | 
						
						29 | 
						
						0.414  | 
						
						10.5  | 
						
						1.949 | 
						  | 
						
						49.50  | 
						  | 
						
						0.0  | 
						
						Ga.1 | 
					
					
						| 
						23 | 
						
						522 | 
						
						 LS29 Gauge | 
						
						56.5 | 
						
						29 | 
						
						0.414  | 
						
						10.5  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-9.4  | 
						
						Ga.1 | 
					
					
						| 
						23 | 
						
						523 | 
						
						 45 mm Gauge | 
						
						56.5 | 
						
						29 | 
						
						0.414  | 
						
						10.5  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-9.4  | 
						
						Ga.1 | 
					
					
						| 
						23 | 
						
						524 | 
						
						 1-3/4" Ga | 
						
						56.5 | 
						
						29 | 
						
						0.414  | 
						
						10.5  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-9.4  | 
						
						Ga.1 | 
					
					
						| 
						23 | 
						
						525 | 
						
						 Gauge 1 | 
						
						56.5 | 
						
						29 | 
						
						0.414  | 
						
						10.5  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-9.4  | 
						
						Ga.1 | 
					
					
						| 
						23 | 
						
						526 | 
						
						 29 / 45 Ga | 
						
						56.5 | 
						
						29 | 
						
						0.414  | 
						
						10.5  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-9.4  | 
						
						Ga.1 | 
					
					
						| 
						23 | 
						
						527 | 
						
						 An42 Gauge | 
						
						42 | 
						
						29 | 
						
						0.414  | 
						
						10.5  | 
						
						1.476 | 
						  | 
						
						37.49  | 
						  | 
						
						1.9  | 
						  | 
					
					
						| 
						23 | 
						
						528 | 
						
						 An3 Gauge | 
						
						36 | 
						
						29 | 
						
						0.414  | 
						
						10.5  | 
						
						1.259 | 
						  | 
						
						31.98  | 
						  | 
						
						1.4  | 
						  | 
					
					
						| 
						23 | 
						
						529 | 
						
						 1-1/4" Ga | 
						
						36 | 
						
						29 | 
						
						0.414  | 
						
						10.5  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						0.7  | 
						
						Ostd | 
					
					
						| 
						23 | 
						
						530 | 
						
						 O Ga USA | 
						
						36 | 
						
						29 | 
						
						0.414  | 
						
						10.5  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						0.7  | 
						
						Ostd | 
					
					
						| 
						23 | 
						
						531 | 
						
						 An30 Gauge | 
						
						30 | 
						
						29 | 
						
						0.414  | 
						
						10.5  | 
						
						1.000 | 
						  | 
						
						25.40  | 
						  | 
						
						-3.3  | 
						  | 
					
					
						| 
						23 | 
						
						532 | 
						
						 An2 Gauge | 
						
						24 | 
						
						29 | 
						
						0.414  | 
						
						10.5  | 
						
						0.886 | 
						  | 
						
						22.50  | 
						  | 
						
						7.1  | 
						  | 
					
					
						| 
						23 | 
						
						533 | 
						
						 S Gauge | 
						
						24 | 
						
						29 | 
						
						0.414  | 
						
						10.5  | 
						
						0.875 | 
						
						0.898 | 
						
						22.23  | 
						
						22.81  | 
						
						5.7  | 
						
						Sstd | 
					
					
						| 
						  | 
						  | 
					
					
						| 
						This scale is advertized for use
						on Gauge 1 track, often described incorrectly as | 
						  | 
					
					
						| 
						"G Gauge" track. Most of the
						rolling stock in this scale is for standard gauge and | 
						  | 
					
					
						| 
						doesn't look too bad even though
						the track gauge is 10% too narrow. Track for the | 
					
					
						| 
						narrow gauges is not available
						commercially but the dimensions are NMRA | 
						  | 
					
					
						| 
						recomendations. | 
						  | 
					
					
						| 
						  | 
						
						  | 
					
					
						| 
						Crain's Scale / Gauge Encyclopedia | 
					
					
						| 
						24 | 
						
						Scale Name: | 
						
						 10 mm Scale | 
						
						  | 
						
						  | 
						
						  | 
						
						  | 
					
					
						| 
						  | 
						
						Scale Ratio: | 
						
						 1:30.5 | 
						  | 
						  | 
					
					
						| 
						  | 
						
						Alternate Names: | 
						
						 10 mm = 1 foot | 
						
						No. 1F Scale (One - Eff) | 
						
						  | 
						
						  | 
					
					
						| 
						  | 
						
						  | 
						
						 Represented  | 
						
						  | 
						
						Scale | 
						
						      Model Track Gauge | 
						
						Error | 
						
						 Track | 
					
					
						| 
						  | 
						
						Ser #   | 
						
						  Gauge | 
						
						 Inches | 
						
						Ratio | 
						
						  In/ft | 
						
						 mm/ft | 
						
						      Inches | 
						
						          mm | 
						
						% | 
						
						 Used | 
					
					
						| 
						  | 
						
						Correct Gauge: | 
						  | 
						  | 
						
						  | 
					
					
						| 
						24 | 
						
						534 | 
						
						 4ft 8.5in | 
						
						56.5 | 
						
						30.5 | 
						
						0.393  | 
						
						10.0  | 
						
						1.852  | 
						  | 
						
						47.05  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						24 | 
						
						535 | 
						
						 Meter | 
						
						39.4 | 
						
						30.5 | 
						
						0.393  | 
						
						10.0  | 
						
						1.292  | 
						  | 
						
						32.81  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						24 | 
						
						536 | 
						
						 3 Foot | 
						
						36 | 
						
						30.5 | 
						
						0.393  | 
						
						10.0  | 
						
						1.180  | 
						  | 
						
						29.98  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						24 | 
						
						537 | 
						
						 2.5 Foot | 
						
						30 | 
						
						30.5 | 
						
						0.393  | 
						
						10.0  | 
						
						0.984  | 
						  | 
						
						24.98  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						24 | 
						
						538 | 
						
						 2 Foot | 
						
						24 | 
						
						30.5 | 
						
						0.393  | 
						
						10.0  | 
						
						0.787  | 
						  | 
						
						19.99  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						24 | 
						
						539 | 
						
						 15 Inch | 
						
						15 | 
						
						30.5 | 
						
						0.393  | 
						
						10.0  | 
						
						0.492  | 
						  | 
						
						12.49  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						  | 
						
						Commonly Used Gauges | 
						
						  | 
					
					
						| 
						24 | 
						
						540 | 
						
						 2" Gauge | 
						
						56.5 | 
						
						30.5 | 
						
						0.393  | 
						
						10.0  | 
						
						2.000 | 
						  | 
						
						50.80  | 
						
						  | 
						
						8.0  | 
						
						Ga.2 | 
					
					
						| 
						24 | 
						
						541 | 
						
						 Gauge 2 | 
						
						56.5 | 
						
						30.5 | 
						
						0.393  | 
						
						10.0  | 
						
						2.000 | 
						  | 
						
						50.80  | 
						
						  | 
						
						8.0  | 
						
						Ga.2 | 
					
					
						| 
						24 | 
						
						542 | 
						
						 No.1F Ga | 
						
						56.5 | 
						
						30.5 | 
						
						0.393  | 
						
						10.0  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-4.7  | 
						
						Ga.1 | 
					
					
						| 
						24 | 
						
						543 | 
						
						 1-3/4" Ga | 
						
						56.5 | 
						
						30.5 | 
						
						0.393  | 
						
						10.0  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-4.7  | 
						
						Ga.1 | 
					
					
						| 
						24 | 
						
						544 | 
						
						 Gauge 1 | 
						
						56.5 | 
						
						30.5 | 
						
						0.393  | 
						
						10.0  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						-4.7  | 
						
						Ga.1 | 
					
					
						| 
						24 | 
						
						545 | 
						
						 1-1/4" Ga | 
						
						36 | 
						
						30.5 | 
						
						0.393  | 
						
						10.0  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						5.9  | 
						
						Ostd | 
					
					
						| 
						24 | 
						
						546 | 
						
						 O Ga USA | 
						
						36 | 
						
						30.5 | 
						
						0.393  | 
						
						10.0  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						5.9  | 
						
						Ostd | 
					
					
						| 
						24 | 
						
						547 | 
						
						 On Gauge | 
						
						36 | 
						
						30.5 | 
						
						0.393  | 
						
						10.0  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						5.9  | 
						
						Ostd | 
					
					
						| 
						  | 
						  | 
					
					
						| 
						This is the British equivalent of
						1:32 Scale. It has been around for many | 
						  | 
					
					
						| 
						years and is very popular. Models
						at 10.25 mm = 1 foot (1:29.7) have been | 
					
					
						| 
						noted. | 
						  | 
					
					
						| 
						  | 
						
						  | 
					
					
						| 
						Crain's Scale / Gauge Encyclopedia | 
					
					
						| 
						25 | 
						
						Scale Name: | 
						
						 Number 1 Scale | 
						
						  | 
						
						  | 
						
						  | 
					
					
						| 
						  | 
						
						Scale Ratio: | 
						
						 1:32 | 
						  | 
						  | 
					
					
						| 
						  | 
						
						Alternate Names: | 
						
						 3/8 Inch Scale | 
						
						  I Scale (in Europe) | 
						
						"One" Scale | 
						  | 
					
					
						| 
						  | 
						
						  | 
						
						  | 
						
						 3/8 inch = 1 foot | 
						
						  #1 Scale | 
						
						  | 
						
						"Gauge One" as a scale name | 
					
					
						| 
						  | 
						
						  | 
						
						 Represented  | 
						
						  | 
						
						Scale | 
						
						      Model Track Gauge | 
						
						Error | 
						
						 Track | 
					
					
						| 
						  | 
						
						Ser #   | 
						
						  Gauge | 
						
						 Inches | 
						
						Ratio | 
						
						  In/ft | 
						
						 mm/ft | 
						
						      Inches | 
						
						          mm | 
						
						% | 
						
						 Used | 
					
					
						| 
						  | 
						
						Correct Gauge: | 
						  | 
						  | 
						
						  | 
					
					
						| 
						25 | 
						
						548 | 
						
						 4ft 8.5in | 
						
						56.5 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						1.766  | 
						  | 
						
						44.85  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						25 | 
						
						549 | 
						
						 Meter | 
						
						39.4 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						1.231  | 
						  | 
						
						31.27  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						25 | 
						
						550 | 
						
						 3 Foot | 
						
						36 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						1.125  | 
						  | 
						
						28.58  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						25 | 
						
						551 | 
						
						 2.5 Foot | 
						
						30 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						0.938  | 
						  | 
						
						23.81  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						25 | 
						
						552 | 
						
						 2 Foot | 
						
						24 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						0.750  | 
						  | 
						
						19.05  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						25 | 
						
						553 | 
						
						 15 Inch | 
						
						15 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						0.469  | 
						  | 
						
						11.91  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						  | 
						
						Commonly Used Gauges | 
						
						  | 
					
					
						| 
						25 | 
						
						554 | 
						
						 Standard Ga | 
						
						66 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						2.125 | 
						  | 
						
						53.98  | 
						
						  | 
						
						3.0  | 
						  | 
					
					
						| 
						25 | 
						
						555 | 
						
						 Standard Ga | 
						
						56.5 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						2.125 | 
						  | 
						
						53.98  | 
						
						  | 
						
						20.4  | 
						  | 
					
					
						| 
						25 | 
						
						556 | 
						
						 1-3/4" Ga | 
						
						56.5 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						0.0  | 
						
						Ga.1 | 
					
					
						| 
						25 | 
						
						557 | 
						
						 I Gauge | 
						
						56.5 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						0.0  | 
						
						Ga.1 | 
					
					
						| 
						25 | 
						
						558 | 
						
						 LS32 | 
						
						56.5 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						0.0  | 
						
						Ga.1 | 
					
					
						| 
						25 | 
						
						559 | 
						
						 45 mm Gauge | 
						
						56.5 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						0.0  | 
						
						Ga.1 | 
					
					
						| 
						25 | 
						
						560 | 
						
						 Gauge 1 | 
						
						56.5 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						0.0  | 
						
						Ga.1 | 
					
					
						| 
						25 | 
						
						561 | 
						
						 #1 Gauge | 
						
						56.5 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						0.0  | 
						
						Ga.1 | 
					
					
						| 
						25 | 
						
						562 | 
						
						 32 / 45 Ga | 
						
						56.5 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						1.766 | 
						
						1.820 | 
						
						44.86  | 
						
						46.23  | 
						
						0.0  | 
						
						Ga.1 | 
					
					
						| 
						25 | 
						
						563 | 
						
						 Proto 32 | 
						
						56.5 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						1.766 | 
						
						1.808 | 
						
						44.86  | 
						
						45.92  | 
						
						0.0  | 
						
						Ga.1 | 
					
					
						| 
						25 | 
						
						564 | 
						
						 Old Ga 1 | 
						
						56.5 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						1.750 | 
						
						  | 
						
						44.45  | 
						
						  | 
						
						-0.9  | 
						  | 
					
					
						| 
						25 | 
						
						565 | 
						
						 3/8"n40 Ga | 
						
						39.4 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						1.5  | 
						
						Ostd | 
					
					
						| 
						25 | 
						
						566 | 
						
						 3/8"m Ga | 
						
						39.4 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						1.5  | 
						
						Ostd | 
					
					
						| 
						25 | 
						
						567 | 
						
						 #1m Gauge | 
						
						39.4 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						1.5  | 
						
						Ostd | 
					
					
						| 
						25 | 
						
						568 | 
						
						 O Gauge | 
						
						39.4 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						1.5  | 
						
						Ostd | 
					
					
						| 
						25 | 
						
						569 | 
						
						 3/8"n3 Ga | 
						
						36 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						1.125 | 
						  | 
						
						28.58  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						25 | 
						
						570 | 
						
						 #1n3 Ga | 
						
						36 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						1.125 | 
						  | 
						
						28.58  | 
						  | 
						
						0.0  | 
						  | 
					
					
						| 
						25 | 
						
						571 | 
						
						 1-1/4" Ga | 
						
						36 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						11.1  | 
						
						Ostd | 
					
					
						| 
						25 | 
						
						572 | 
						
						 O Ga USA | 
						
						36 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						11.1  | 
						
						Ostd | 
					
					
						| 
						25 | 
						
						573 | 
						
						 On Gauge | 
						
						36 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						1.250 | 
						
						1.285 | 
						
						31.75  | 
						
						32.64  | 
						
						11.1  | 
						
						Ostd | 
					
					
						| 
						25 | 
						
						574 | 
						
						 1-1/8" Ga | 
						
						36 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						1.125 | 
						  | 
						
						28.58  | 
						  | 
						
						0.0  | 
						
						Ga.0 | 
					
					
						| 
						25 | 
						
						575 | 
						
						 Gauge 0 | 
						
						36 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						1.125 | 
						  | 
						
						28.58  | 
						  | 
						
						0.0  | 
						
						Ga.0 | 
					
					
						| 
						25 | 
						
						576 | 
						
						 Proto 32n3 | 
						
						36 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						1.125 | 
						
						1.157 | 
						
						28.58  | 
						
						29.39  | 
						
						0.0  | 
						
						Ga.0 | 
					
					
						| 
						25 | 
						
						577 | 
						
						 3/8"n2.5 | 
						
						30 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						0.875 | 
						
						0.898 | 
						
						22.23  | 
						
						22.81  | 
						
						-6.7  | 
						
						Sstd | 
					
					
						| 
						25 | 
						
						578 | 
						
						 #1n2.5 | 
						
						30 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						0.875 | 
						
						0.898 | 
						
						22.23  | 
						
						22.81  | 
						
						-6.7  | 
						
						Sstd | 
					
					
						| 
						25 | 
						
						579 | 
						
						 1n2.5 | 
						
						30 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						0.875 | 
						
						0.898 | 
						
						22.23  | 
						
						22.81  | 
						
						-6.7  | 
						
						Sstd | 
					
					
						| 
						25 | 
						
						580 | 
						
						 S Gauge | 
						
						30 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						0.875 | 
						
						0.898 | 
						
						22.23  | 
						
						22.81  | 
						
						-6.7  | 
						
						Sstd | 
					
					
						| 
						25 | 
						
						581 | 
						
						 3/8"n750 | 
						
						29.5 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						0.921 | 
						  | 
						
						23.39  | 
						  | 
						
						-0.1  | 
						
						Sstd | 
					
					
						| 
						25 | 
						
						582 | 
						
						 #1n750 Ga | 
						
						29.5 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						0.921 | 
						  | 
						
						23.39  | 
						  | 
						
						-0.1  | 
						
						Sstd | 
					
					
						| 
						25 | 
						
						583 | 
						
						 #1e Gauge | 
						
						29.5 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						0.921 | 
						  | 
						
						23.39  | 
						  | 
						
						-0.1  | 
						
						Sstd | 
					
					
						| 
						25 | 
						
						584 | 
						
						 Ie Gauge | 
						
						29.5 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						0.921 | 
						  | 
						
						23.39  | 
						  | 
						
						-0.1  | 
						
						Sstd | 
					
					
						| 
						25 | 
						
						585 | 
						
						 S Gauge | 
						
						29.5 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						0.875 | 
						
						0.898 | 
						
						22.23  | 
						
						22.81  | 
						
						-5.1  | 
						
						Sstd | 
					
					
						| 
						25 | 
						
						586 | 
						
						 3/8"n2 Ga | 
						
						24 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						0.750 | 
						
						0.772 | 
						
						19.05  | 
						
						19.61  | 
						
						0.0  | 
						
						OOstd | 
					
					
						| 
						25 | 
						
						587 | 
						
						 #1n2 Ga | 
						
						24 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						0.750 | 
						
						0.772 | 
						
						19.05  | 
						
						19.61  | 
						
						0.0  | 
						
						OOstd | 
					
					
						| 
						25 | 
						
						588 | 
						
						 OO Gauge | 
						
						24 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						0.750 | 
						
						0.772 | 
						
						19.05  | 
						
						19.61  | 
						
						0.0  | 
						
						OOstd | 
					
					
						| 
						25 | 
						
						589 | 
						
						 On3 Gauge | 
						
						24 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						0.750 | 
						
						0.778 | 
						
						19.05  | 
						
						19.76  | 
						
						0.0  | 
						
						On3 | 
					
					
						| 
						25 | 
						
						590 | 
						
						 FS1/32NG | 
						
						24 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						0.750 | 
						
						0.778 | 
						
						19.05  | 
						
						19.76  | 
						
						0.0  | 
						
						On3 | 
					
					
						| 
						25 | 
						
						591 | 
						
						 #1f Gauge | 
						
						24 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						0.750 | 
						
						0.778 | 
						
						19.05  | 
						
						19.76  | 
						
						0.0  | 
						
						On3 | 
					
					
						| 
						25 | 
						
						592 | 
						
						 #1i Gauge | 
						
						24 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						0.750 | 
						
						0.778 | 
						
						19.05  | 
						
						19.76  | 
						
						0.0  | 
						
						On3 | 
					
					
						| 
						25 | 
						
						593 | 
						
						 3/8"n600 | 
						
						23.6 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						0.738 | 
						  | 
						
						18.75  | 
						  | 
						
						0.1  | 
						
						OOstd | 
					
					
						| 
						25 | 
						
						594 | 
						
						 #1n600 | 
						
						23.6 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						0.738 | 
						  | 
						
						18.75  | 
						  | 
						
						0.1  | 
						
						OOstd | 
					
					
						| 
						25 | 
						
						595 | 
						
						 OO Gauge | 
						
						23.6 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						0.738 | 
						  | 
						
						18.75  | 
						  | 
						
						0.1  | 
						
						OOstd | 
					
					
						| 
						25 | 
						
						596 | 
						
						 FS1/32NG | 
						
						20 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						0.649 | 
						
						0.672 | 
						
						16.48  | 
						
						17.07  | 
						
						3.8  | 
						
						HOstd | 
					
					
						| 
						25 | 
						
						597 | 
						
						  3.8"n20 | 
						
						20 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						0.649 | 
						
						0.672 | 
						
						16.48  | 
						
						17.07  | 
						
						3.8  | 
						
						HOstd | 
					
					
						| 
						25 | 
						
						598 | 
						
						 HO Gauge | 
						
						20 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						0.649 | 
						
						0.672 | 
						
						16.48  | 
						
						17.07  | 
						
						3.8  | 
						
						HOstd | 
					
					
						| 
						25 | 
						
						599 | 
						
						 3/8"n500 | 
						
						19.7 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						0.649 | 
						
						0.672 | 
						
						16.48  | 
						
						17.07  | 
						
						5.4  | 
						
						HOstd | 
					
					
						| 
						25 | 
						
						600 | 
						
						 #1n500 | 
						
						19.7 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						0.649 | 
						
						0.672 | 
						
						16.48  | 
						
						17.07  | 
						
						5.4  | 
						
						HOstd | 
					
					
						| 
						25 | 
						
						601 | 
						
						 HO Gauge | 
						
						19.7 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						0.649 | 
						
						0.672 | 
						
						16.48  | 
						
						17.07  | 
						
						5.4  | 
						
						HOstd | 
					
					
						| 
						25 | 
						
						602 | 
						
						 FS1/32NG | 
						
						18 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						0.563 | 
						  | 
						
						14.30  | 
						  | 
						
						0.1  | 
						  | 
					
					
						| 
						25 | 
						
						603 | 
						
						 On2 Gauge | 
						
						18 | 
						
						32 | 
						
						0.375  | 
						
						9.5  | 
						
						0.563 | 
						  | 
						
						14.30  | 
						  | 
						
						0.1  | 
						  | 
					
					
						| 
						  | 
						  | 
					
					
						| 
						This is very popular scale for
						model railways, and a number of live steam | 
					
					
						| 
						manufacturers also supply this
						scale. Some G and A Scale equipment is actually | 
						  | 
					
					
						| 
						closer to 1:32 Scale. |