[2] Track and wheels are closer to dead scale replicas than commercial British N. The 2 mm standards[3] were proposed by Mr. H H Groves in the early 1960s and revised to their current specification in November 1963 by Geoffrey Jones.

[5] Since 2 mm scale is very close to the 1:148 British N scale, a hybrid specification can be modelled by re-wheeling proprietary British N-scale models to the 9.42 mm track gauge.

There is an advantage however in the narrower gauge as this allows more room for the outside motion of outside cylindered steam locomotives, which must be overscale in order to function correctly.

The FiNescale standard in use for European prototypes is identical to 2mmFS, with the exception of a to-scale rail gauge of 9 mm (0.354 in).

[citation needed] One major effect of the standard is to improve the appearance of the track as opposed to N scale, where it is overly tall.