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  2. EM gauge - Wikipedia

    en.wikipedia.org/wiki/EM_gauge

    EM gauge (named after the track gauge of a nominal E ighteen M illimetres [1]) is a variant of 4 mm to a foot (1:76) scale used in model railways. EM was developed because OO gauge, favoured by manufacturers of British prototype models, utilised track that was too narrow. OO was developed in the UK in the 1930s as a response to manufacturers ...

  3. Rail transport modelling scales - Wikipedia

    en.wikipedia.org/.../Rail_transport_modelling_scales

    Narrow-gauge modelling of 3 ft (914 mm) prototypes on 12mm gauge (the same as TT scale) track. EM gauge: 1:76.2: 18.2 mm EM gauge was an earlier attempt in the 1950s to improve the inaccuracies of OO gauge, with wider, more accurate track at 18 mm (0.709 in) between the rails, but still

  4. List of rail transport modelling scale standards - Wikipedia

    en.wikipedia.org/wiki/List_of_rail_transport...

    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 ...

  5. 4 mm scale - Wikipedia

    en.wikipedia.org/wiki/4_mm_scale

    The gauge of track built to these standards is 18.83 mm. Along with EM Gauge It is also a popular choice for finescale modellers working today. The main advantage of P4 over the other 4 mm standards is that the wheel flanges are approximately to scale and the flangeway gaps on P&C work are also close to scale.

  6. Protofour - Wikipedia

    en.wikipedia.org/wiki/Protofour

    Model gauge. 18.83 mm (0.741 in) Prototype gauge. Standard gauge. Website. Scalefour Society. Protofour or P4 is a set of standards for model railways allowing construction of models to a scale of 4 mm to 300 mm (1 ft) (1:76.2), [1] the predominant scale of model railways of the British prototype. For historical reasons almost all manufacturers ...

  7. List of narrow-gauge model railway scales - Wikipedia

    en.wikipedia.org/wiki/List_of_narrow-gauge_model...

    1:48 1⁄4" scale used for Queensland sugar cane railways[17] and US subjects[18] of 3 ft 6 in. (1,067 mm) ^ O21 – [1] 3 ft (914 mm) ^ O16.5 – UK 7 mm scale with 00 16.5 mm gauge, used to model gauges between 2 ft (610 mm) and 2 ft 6 in (762 mm). ^ O14 – Finescale modelling of British 2ft gauge using 7 mm O scale and a unique 14 mm gauge.