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Track gauge conversion is the changing of one railway track gauge (the distance between the running rails) to another. In general, requirements depend on whether the conversion is from a wider gauge to a narrower gauge or vice versa, on how the rail vehicles can be modified to accommodate a track gauge conversion, and on whether the gauge conversion is manual or automated.
The Mount Gambier line in South Australia was fitted with some 3-gauge steel sleepers when it was "temporarily" converted, [ambiguous] pending later proposed conversion to 1,435 mm (4 ft 8 + 1 ⁄ 2 in) (which did not occur, the line being abandoned instead). [citation needed] 1,600 mm (5 ft 3 in) 1,067 mm (3 ft 6 in) 1927 Australia
See 9 + 7 ⁄ 16 in (240 mm) gauge ridable miniature railways. 241 mm 9 + 1 ⁄ 2 in: See 9 + 1 ⁄ 2 in (241 mm) gauge ridable miniature railways. 260 mm 10 + 1 ⁄ 4 in: See 10 + 1 ⁄ 4 in (260 mm) gauge ridable miniature railways. 267 mm 10 + 1 ⁄ 2 in: England Beale Park miniature railway 305 mm 12 in: See 12 in (305 mm) gauge ridable ...
The most common use of the term "track gauge" refers to the transverse distance between the inside surfaces of the two load-bearing rails of a railway track, usually measured at 12.7 millimetres (0.50 inches) to 15.9 millimetres (0.63 inches) below the top of the rail head in order to clear worn corners and allow for rail heads having sloping ...
The railway used this gauge for 15 years before a change was made, debuting around 1850, to the 1,435 mm (4 ft 8 + 1 ⁄ 2 in) gauge. [12] [15] [page needed] The historic Mount Washington Cog Railway, the world's first mountain-climbing rack railway, is still in operation in the 21st century, and has used the earlier 4 ft 8 in (1,422 mm) gauge ...
The gauge was known as "Texas gauge" while required by Texas law until 1875, [4] and used by the New Orleans, Opelousas and Great Western Railroad (NOO&GW) until 1872, and by the Texas and New Orleans Railroad until 1876. The New England railways were similarly standard-gauged in the 1870s.
ISO 18265: "Metallic materials — Conversion of hardness values" (2013) ASTM E140-12B(2019)e1: "Standard Hardness Conversion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness, Superficial Hardness, Knoop Hardness, Scleroscope Hardness, and Leeb Hardness" (2019)
Avoirdupois is a system of mass based on a pound of 16 ounces, while Troy weight is the system of mass where 12 troy ounces equals one troy pound. The symbol g 0 is used to denote standard gravity in order to avoid confusion with the (upright) g symbol for gram.
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