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When H0 scale was being introduced, the motors available were too large [4] to fit in scale-sized bodies and so as a compromise the scale was increased from 3.5 mm to 4 mm to the foot, but the gauge was not changed so other elements could be shared. For 00 therefore the track is about 12.5% narrower than it should be for the scale used.
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 ...
Many names, particularly those of British origin, such as O14 and 00-9 combine the name of the scale used with the physical measurement of the gauge, i.e. the 7 mm-to-the-foot scale from standard O gauge with a rail gauge of 14 mm, giving a precise representation of 2 ft (610 mm) prototypes.
Most commercial scales have standards that include wheel flanges that are too deep, wheel treads that are too wide, and rail tracks that are too large. In H0 scale, the rail heights are codes 100, 87, 83, 70, 55, 53, and 40 -- the height in thousandths of an inch from base to railhead (so code 100 is a tenth of an inch and represents 156-pound ...
identity documents such as the British Passport. Consult this guide for full details. Note: Since 2010, almost all information owned by the UK Crown is offered for use and re-use under the Open Government Licence by authority of The Controller of His Majesty's Stationery Office. info
The National Model Railroad Association (NMRA) is an American non-profit organization for those involved in the hobby or business of model railroading.It was founded in the United States in 1935, and is also active in Canada, Australia, the United Kingdom, and the Netherlands.
The P4 standards specify a scale model track gauge of 18.83 mm (0.741 in) for standard gauge railways. Joe Brook Smith was the first to propose use of an exact scale track gauge in July 1964, when also the term Protofour was invented by Malcolm Cross. [ 2 ]
A copy of the 2002 edition of the National Routeing Guide. The railway network of Great Britain is operated with the aid of a number of documents, which have been sometimes termed "technical manuals", [1] because they are more detailed than the pocket-timetables which the public encounters every day.