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  2. List of gauge conversions - Wikipedia

    en.wikipedia.org/wiki/List_of_gauge_conversions

    914 mm (3 ft) 1986 United Kingdom: Wales Gorseddau Junction and Portmadoc Railway: 1,435 mm (4 ft 8 + 1 ⁄ 2 in) 2,140 mm (7 ft 1 ⁄ 4 in) 1892 United Kingdom: England / Wales Great Western Railway: 600 mm (1 ft 11 + 5 ⁄ 8 in) 597 mm (1 ft 11 + 1 ⁄ 2 in) United Kingdom: England Lynton and Barnstaple Railway: 1,067 mm (3 ft 6 in)

  3. Help:Convert - Wikipedia

    en.wikipedia.org/wiki/Help:Convert

    By default, the output value is rounded to adjust its precision to match that of the input. An input such as 1234 is interpreted as 1234 ± 0.5, while 1200 is interpreted as 1200 ± 50, and the output value is displayed accordingly, taking into account the scale factor used in the conversion.

  4. List of track gauges - Wikipedia

    en.wikipedia.org/wiki/List_of_track_gauges

    1,016 mm 3 ft 4 in: Scotland Kilmarnock and Troon Railway: United States Coal Hill Coal Railroad, Keeling Coal Company, Pittsburgh and Castle Shannon Plane, Pittsburgh and Castle Shannon Railroad: 1,029 mm 3 ft 4 + 1 ⁄ 2 in: England Herne Bay Pier Railway: 1,035 mm 3 ft 4 + 34 in: England Lake Lock Rail Road: 1,040 mm 3 ft 5 in: Austria

  5. Help:Convert units - Wikipedia

    en.wikipedia.org/wiki/Help:Convert_units

    Metric prefixes; Text Symbol Factor or; yotta Y 10 24: 1 000 000 000 000 000 000 000 000: zetta Z 10 21: 1 000 000 000 000 000 000 000: exa E 10 18: 1 000 000 000 000 000 000: peta P 10 15: 1 000 000 000 000 000: tera T

  6. Foot (unit) - Wikipedia

    en.wikipedia.org/wiki/Foot_(unit)

    The Greek foot (πούς, pous) had a length of ⁠ 1 / 600 ⁠ of a stadion, [12] one stadion being about 181.2 m (594 ft); [13] therefore a foot was, at the time, about 302 mm (11.9 in). Its exact size varied from city to city and could range between 270 mm (10.6 in) and 350 mm (13.8 in), but lengths used for temple construction appear to ...

  7. Orders of magnitude (length) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(length)

    The millimetre (SI symbol: mm) is a unit of length in the metric system equal to 10 −3 metres (⁠ 1 / 1 000 ⁠ m = 0.001 m). To help compare different orders of magnitude , this section lists lengths between 10 −3 m and 10 −2 m (1 mm and 1 cm).

  8. List of conversion factors - Wikipedia

    en.wikipedia.org/wiki/List_of_conversion_factors

    ≡ 0.3 m foot, metric ... ≡ One rpm equals one rotation completed around a fixed axis in one minute of time. ... ≡ 1 ft 3 /min = 4.719 474 432 ...

  9. List of unusual units of measurement - Wikipedia

    en.wikipedia.org/wiki/List_of_unusual_units_of...

    The hand is a non-SI unit of length equal to exactly 4 inches (101.6 mm). ... This translates to a hoppus foot being equal to 1.273 cubic feet (2,200 in 3; 0.0360 m 3).