Sn3½
From Infogalactic: the planetary knowledge core
| Sn3½ | |
|---|---|
| Scale | 3⁄16 in to 1 ft |
| Scale ratio | 1:64 |
| Model gauge | 16.5 mm (0.65 in) |
| Prototype gauge | 3 ft 6 in (1,067 mm) |
In rail transport modelling, Sn3½ is a scale/gauge combination derived from S scale to represent narrow gauge 3 ft 6 in (1,067 mm) track by using 16.5 mm (0.65 in) gauge track (the same as HO gauge). The scale is 1:64.
Sn3½ is popular in South Africa, Australia (particularly Western Australia,[1] Queensland[2] and Tasmania[3] where narrow gauge systems exist) and New Zealand.[4]
Track
As 3 ft 6 in (1,067 mm) track scales down to 16.5mm at 1:64, modelers use HO gauge track (which represents Standard gauge at 1:87 scale) on Sn3½ layouts.[5]
Sm
Sm gauge is also defined by the German NEM 10 standard,[6] representing Continental European metre gauge.
References
Notes
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Bibliography
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