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Proto scale was originally developed by the Model Railway Study Group in Great Britain in 1966 and later adopted into NMRA standards with modifications necessary for the North American prototype railway standards. Proto scale reproduces faithfully the prototype wheel tread profile and track work used by the Association of American Railroads and ...
This scale is today the most popular modelling scale in the UK, although it once had some following in the US (on 19 mm / 0.748 in gauge track) before World War II. 00 or "Double-Oh", together with EM gauge and P4 standards are all to 4 mm scale as the scale is the same, but the track standards are incompatible. 00 uses the same track as HO (16 ...
Upload file; Search. Search. Appearance. ... Download as PDF; Printable version ... List of rail transport modelling scale standards; List of scale model sizes; Rail ...
Railway modelling has long used a variety of scales and gauges to represent its models of real subjects. In most cases, gauge and scale are chosen together, so as to represent Stephenson standard gauge. By choosing a smaller gauge than this for a particular scale, the model represents a narrow-gauge example. [1] [2]
The standards were later published in Model Railway News by the Model Railway Study Group in August 1966. Just as in the prototype railway, on a model the wheel-rail interface is the fundamental aspect of reliable operation. So as well as a track gauge, P4 also specifies the wheel profile and track parameters to use, which are largely a scaled ...
The Australian Model Railway Association has a set of standards based on FREMO called the "AMRA Free Form Module Standard." Version 2.4 of the standard was published in July 2024. As of 2024 [update] , there are standards for HO and N Scales, with an O Scale version under development in collaboration with the Aus7 O Scale Modeller's Group.
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ScaleSeven (S7) is a set of finescale model railway standards for 1:43.5 using true-to-prototype track and wheel standards. It is principally used to model British standard gauge ( 4 ft 8 + 1 ⁄ 2 in ( 1,435 mm )), Irish Broad Gauge ( 5 ft 3 in ( 1,600 mm )), or Great Western broad gauge ( 7 ft ( 2,134 mm )).