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  2. List of track gauges - Wikipedia

    en.wikipedia.org/wiki/List_of_track_gauges

    Prince William Railway Company, Wuppertal-Vohwinkel–Essen-Überruhr railway, converted to standard gauge. 825 mm: 2 ft 8 + 1 ⁄ 2 in: England Brighton and Rottingdean Seashore Electric Railway (a vehicle that ran on two parallel 2 ft 8 + 1 ⁄ 2 in (825 mm) gauge tracks, billed as 18 ft (5.5 m) gauge), Furzebrook Railway and Volk's Electric ...

  3. List of gauge conversions - Wikipedia

    en.wikipedia.org/wiki/List_of_gauge_conversions

    While China and Europe are connected by rail, and while both are mainly 1,435 mm (4 ft 8 + 1 ⁄ 2 in), the intervening Central Asia Railways are 1,520 mm (4 ft 11 + 27 ⁄ 32 in) gauge. There are discussions about facilitating an eventual linkage of the Chinese and European standard gauge system.

  4. Track gauge conversion - Wikipedia

    en.wikipedia.org/wiki/Track_gauge_conversion

    Concrete sleepers may be cast with alternative gauge fittings in place, an example being those used during the conversion of the Melbourne–Adelaide railway from 1600 mm (5 ft 3 in) to 1435 mm (4 ft 8 + 1 ⁄ 2 in). Steel sleepers may have alternative gauge fittings cast at production, may be drilled for new fittings or may be welded with new ...

  5. Rail transport modelling scales - Wikipedia

    en.wikipedia.org/wiki/Rail_transport_modelling...

    1:8: 184 mm or 190.5 mm Ridable, outdoor gauge, named according to the gauge in inches, and scale in inches per foot, for example 7 + 1 ⁄ 4 in (184 mm) gauge, 1.5 inch scale. The gauge is 7 + 1 ⁄ 2 in (190.5 mm) in the US and Canada, where the scale sometimes is 1.6 inch for diesel-type models. Private and public (club) tracks exist in many ...

  6. Track gauge - Wikipedia

    en.wikipedia.org/wiki/Track_gauge

    Triple gauge, from left: 1,435 mm (4 ft 8 + 1 ⁄ 2 in), 1,000 mm (3 ft 3 + 3 ⁄ 8 in), and 600 mm (1 ft 11 + 5 ⁄ 8 in), on display at the China Railway Museum in Beijing As railways were built in other countries, the gauge selection was pragmatic: the track would have to fit the rolling stock.

  7. Drill bit sizes - Wikipedia

    en.wikipedia.org/wiki/Drill_bit_sizes

    For Morse taper-shank drill bits, the standard continues in 1/64 inch increments up to 1¾ inch, then 1/32 inch increments up to 2¼ inch, 1/16 inch increments up to 3 inches, 1/8 inch increments up to 3¼ inches, and a single 1/4 inch increment to 3½ inches. One aspect of this method of sizing is that the size increment between drill bits ...

  8. Gauge block - Wikipedia

    en.wikipedia.org/wiki/Gauge_block

    Gauge blocks come in sets of blocks with a range of standard lengths. In use, the blocks are stacked to make up a desired length (or height). Gauge blocks were invented in 1896 by Swedish machinist Carl Edvard Johansson. [1] They are used as a reference for the calibration of measuring equipment used in machine shops, such as micrometers, sine ...

  9. Sheet metal - Wikipedia

    en.wikipedia.org/wiki/Sheet_metal

    The thicknesses vary first by 1 ⁄ 32 inch in higher thicknesses and then step down to increments of 1 ⁄ 64 inch, then 1 ⁄ 128 inch, with the final increments at decimal fractions of 1 ⁄ 64 inch. Some steel tubes are manufactured by folding a single steel sheet into a square/circle and welding the seam together. [12]