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This gauge is represented by the EM Society (in full, Eighteen Millimetre Society). 00 track (16.5 mm) is the wrong gauge for 1:76 scale, but use of an 18.2 mm (0.717 in) gauge track is accepted as the most popular compromise towards scale dimensions without having to make significant modifications to ready-to-run models. Has a track gauge ...
Fn3 scale, together with G scale and 1 ⁄ 2 inch (1:24) scale, are commonly and collectively referred to as "Large Scale" by many modelers. Fn2 scale: 1:20.3: 30 mm or 32 mm Used by mostly American modelers wishing to model smaller industrial prototypes, including two-footers; this is a minority scale.
Many standards defined by the NMRA are widely followed by the industry and modellers, [citation needed] including their H0 scale track and wheel standards (S-3, S-4) and related RPs (RP2, 8, 10-15, and 25) and their Digital Command Control (DCC) standard set (S-9.1, S-9.2, and RP9.1.1 through RP9.3.2).
The scales used include the general European modelling range of Z, N, TT, H0, 0 and also the large model engineering gauges of I to X, including 3 + 1 ⁄ 2, 5, 7 + 1 ⁄ 4 and 10 + 1 ⁄ 4-inch gauge. As 00 is a particularly British scale, it is not included within this pan-European standard.
See 9 + 1 ⁄ 2 in (241 mm) gauge ridable miniature railways. 260 mm 10 + 1 ⁄ 4 in: See 10 + 1 ⁄ 4 in (260 mm) gauge ridable miniature railways. 267 mm 10 + 1 ⁄ 2 in: England Beale Park miniature railway 305 mm 12 in: See 12 in (305 mm) gauge ridable miniature railways. 310 mm 1 + 13 ⁄ 64 in Denmark See Narrow-gauge railways in Denmark ...
Conceptually it is similar to Digital Command Control (DCC), the industry's open standard used by HO scale and other 2-rail DC trains. It has one advantage over DCC, in that TMCC-equipped locomotives can run simultaneously with non-TMCC locomotives and Lionel Legacy engines as well as LionChief and LionChief Plus equipped locomotives. [1]
Modern H0m trains run on realistic-looking two-rail track, which is powered by direct current (varying the voltage applied to the rails to change the speed, and polarity to change direction), or by Digital Command Control (sending commands to a decoder in each locomotive). It is a popular scale in Europe, particularly for trains of Swiss outline.
Licensees that formerly or currently offer separate sale decoders include Train America Studios, Digital Dynamics, and Electric RR Co. TMCC decoders have mostly been installed in 3-rail O gauge models, but it has also been offered in 2-rail O scale and S scale. TMCC utilizes the same command codes as Digital Command Control (DCC).