7 mm scale, also known as British 0 scale is a model railway scale of 1:43.5 (or 7 mm to 1 ft; hence its name). The scale is thus different from
American 0 scale (1:48) and
European 0 scale (1:45) For standard gauge railways, 32mm gauge, or 0 gauge is most commonly used.
ScaleSeven
ScaleSeven (S7) is a set of finescale model railway standards for 1:43.5 (7 mm scale) using true-to-prototype track and wheel standards. It is principally used to model British standard gauge (), Irish Broad Gauge (), or Great Western broad gauge ...
(S7) standard however specifies 33 mm gauge, which is closer to scale. For narrow gauge modelling, 16.5 mm gauge
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