MODEL RAILWAY SCALES:


The MODEL ENGINEERING SCALES:

Recreational lines using the largest gauges are often based on contractors equipment

* Usage. Gauge. Proportion. Ratio. Comments.
24in 5in:1ft. 1:2.4 Live steam. Parks & commercial.
19in. 4in:1ft. 1:3 Live steam. Parks & commercial.
18in. 4in:1ft. 1:3 Live steam. Parks & commercial.
* U.K. 15in. 4in:1ft. 1:3 Romney, Hythe & Dymchurch Rly. U.K.
U.K. 15in 3in:1ft. 1:4 Live steam. Britain
U.K. 10 1/4in. 1:5.5 Triang Minex. Proprietry mid 1960s.
9 1/2in. 2in:1ft. 1:6

Track gauges commonly used by model engineering clubs around the world:

(Check with your local club for standards before starting a model.)

* Usage. Gauge. Proportion. Ratio. Comments.
USA. 7 1/2in. 2 1/2in:1ft. 1:4.8 Narrow gauge live steam.
7 1/2in. 1.6in:1ft. 1:7.5 Live steam.
U.S.A. 7 1/2in. 1 1/2:1ft. 1:8 Live steam. USA.
* 7 1/4in. 1.5in:1ft. 1:8 steam.
* 5 1/4in. 1in:1ft. 1:12 Live steam. USA?
U.S.A. 5in. 1in:1ft. 1:12 Live steam. USA.
4 3/4in. 1in:1ft. 1:12 Live steam.
* 3 1/2in. 1in:1ft. 1:12 Live steam, 3ft 6in gauge.
* 3 1/2in. 3/4in:1ft. 1:16 Live steam. The smallest ride-on models..


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G.L.Procter: 20/9/1997.