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Europe. Australia. A narrow-gauge railway ( narrow-gauge railroad in the US) is a railway with a track gauge narrower than 1,435 mm ( 4 ft 81⁄2 in) standard gauge. Most narrow-gauge railways are between 600 mm ( 1 ft 115⁄8 in) and 1,067 mm ( 3 ft 6 in ). Since narrow-gauge railways are usually built with tighter curves, smaller structure ...
In Tennessee, the Duck River Valley Narrow Gauge Railway was also chartered in 1870, opening seven years later; it was converted to standard gauge in 1888. The first narrow-gauge railway in Alabama was the Tuskegee Railroad in 1871. Longest lived of its narrow gauges was the East Tennessee and Western North Carolina Railroad.
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 3⁄2, 5, 7⁄4 and 10⁄4 -inch gauge. As 00 is a particularly British scale, it is not included within this pan-European standard.
Standard gauge is generally known world-wide as being 1,435 mm (4 ft 8 + 1 ⁄ 2 in). Terms such as broad gauge and narrow gauge do not have any fixed meaning beyond being materially wider or narrower than standard.
Track gauge. Originally, various track gauges were used in the United States. Some railways, primarily in the northeast, used standard gauge of 4 ft 8⁄ in ( 1,435 mm ); others used gauges ranging from 2 ft ( 610 mm) to 6 ft ( 1,829 mm ). As a general rule, southern railroads were built to one or another broad gauge, mostly 5 ft ( 1,524 mm ...
In Australia, this gauge is typically referred to as narrow gauge in comparison to 4 ft 8 + 1 ⁄ 2 in (1,435 mm) standard gauge or 5 ft 3 in (1,600 mm) broad gauge. In some instances, simply 3 foot 6 inch — or in rarer cases medium gauge — is used to distinguish it from other narrow gauges.
Many narrow-gauge railways were built in the United States with track gauge 3 ft ( 914 mm ). The most extensive and well known systems were the 3 ft ( 914 mm) gauge lines through the Rocky Mountain states of Colorado and New Mexico . Today a few lines survive as heritage railways and tourist attractions. USG Corporation operates an industrial 3 ...
1:22.6. 2. +. 1⁄2 in ( 64 mm) The smallest scale able to pull real passengers. Was one of the first popular live steam gauges, developed in England in the early 1900s. In terms of model railway operation, gauge 3 is the largest (standard gauge) scenic railway modelling scale, using a scale of 13.5 mm to the foot.