N Scale History
This is a stub from from N scale article.
In Britain, some N scale models are built to "2mm scale" for "2mm to the foot" which calculates to a 1:152 proportion. Early N scale was also known as "OOO" or "Treble-O" in reference to O and OO scales and was also 1:152, though for an entirely different reason.
In the United States and Europe, models of standard gauge (4'8.5") trains are built to 1:160 scale and made so that they run on N gauge track. This combination is also called N scale. The minor difference doesn't bother anyone (except the 2mm scale modellers) and allows the convenient use of track manufactured in the U.K. for all N gauge trains. One such manufacturer is Peco. N Scale is also used in the popular Collectable Miniature game Mechwarrior produced by Wizkids Games. To learn more about the game, visit www.wizkidsgames.com\mechwarrior.
In the United Kingdom a scale of 1:148 is used for commercially produced models. In Japan, a scale of 1:150 is used for the models of 3'6" gauge trains, while a scale of 1:160 is used for models of standard gauge Shinkansen (Bullet Train) models. In the U.S. and Europe, a scale of 1:160 is used for models of trains, irrespective of the gauge of the real trains they are scaled from. One result of this is called Nn3, which uses 1:160 models on Z scale track.
Although trains and accessories of similar gauge and/or scale existed as early as 1927, modern N scale only appeared in 1962. Unlike other scales and gauges, which were de facto standards at best, within two years N scale manufacturers defined the gauge, voltage, as well as the height and type, of couplers.