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Uncommon term for 1:29 scale first used by AristCraft for modeling standard gauge prototypes on 45 mm track. Gauge one is scaled at 1:32 (3/8" to the foot) used to model standard gauge trains of 4 ft 8+1⁄2 in (1,435 mm) stardard-gauge.LGB were first to adopt the term G scale and used the gauge of 45 mm (1.772 in) to model 1,000 mm gauge European trains in 1:22.5 scale.īelow are some typical scales with more specific terms that all run on G gauge's 45 mm gauge track: (You'll see a huge 1 Gauge locomotive downstairs.) The 45 mm gauge originated from 1 gauge or "gauge one" which was first used in Europe and Britain and used to model standard gauge trains in the scale of 1:32. Because of this it might be more correct to speak of "G gauge" rather than "G scale" since the consistent aspect is the gauge, 45 mm (1.772 in), but the term "G scale" (or "scale IIm") is used when 1:22.5 is used. G model railways depart from this and always use the same gauge with the trains instead built in different sizes depending on whether they are intended to represent standard-gauge or narrow-gauge trains.
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For example HO scale (1:87 or 3.5 mm to 1 foot) (and also, although inaccurately, double O-OO at 4 mm to 1 foot) models all use 16.5 mm gauge track to represent standard gauge trains while a narrower-gauge track such as 9 mm N gauge is used to represent real narrow gauge. Model trains are built to represent a real train of standard or narrow gauge.