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  2. H0m gauge - Wikipedia

    en.wikipedia.org/wiki/H0m_gauge

    The letter m stands for metre prototype gauge with a track width of 1000 mm. It runs on 12 mm ( 0.472 in ) TT scale tracks. Modern H0m trains run on realistic-looking two-rail track, which is powered by direct current (varying the voltage applied to the rails to change the speed , and polarity to change direction), or by Digital Command Control ...

  3. Millimetre - Wikipedia

    en.wikipedia.org/wiki/Millimetre

    Different lengths as in respect to the electromagnetic spectrum, measured by the metre and its derived scales.The microwave is between 1 meter to 1 millimeter.. The millimetre (international spelling; SI unit symbol mm) or millimeter (American spelling) is a unit of length in the International System of Units (SI), equal to one thousandth of a metre, which is the SI base unit of length.

  4. Orders of magnitude (length) - Wikipedia

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

    1.435 m – standard gauge of railway track used by about 60% of railways in the world = 4 ft 8 1 ⁄ 2 in; 2.5 m – distance from the floor to the ceiling in an average residential house [119] 2.7 m – length of the Starr Bumble Bee II, the smallest plane; 2.77–3.44 m – wavelength of the broadcast radio FM band 87–108 MHz

  5. Milliradian - Wikipedia

    en.wikipedia.org/wiki/Milliradian

    In other words, 1 cm at 100 meters, 2.25 cm at 225 meters, 0.5 cm at 50 meters, etc. See the table below Range ... 1000 m 1000 mm 100 cm 100 mm 10 cm

  6. List of track gauges - Wikipedia

    en.wikipedia.org/wiki/List_of_track_gauges

    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 Railway: 838 mm 2 ft 9 in: Japan Nankai Railway (former gauge, converted to 1,067 mm (3 ft 6 in gauge) England

  7. List of gauge conversions - Wikipedia

    en.wikipedia.org/wiki/List_of_gauge_conversions

    1,000 mm (3 ft 3 + 3 ⁄ 8 in) 1,435 mm (4 ft 8 + 1 ⁄ 2 in) 1920 onward Thailand: From 1920, the standard gauge part of the Siam railway amounting to 1,000 km (620 mi) was converted first to third rail, and then to 1,000 mm (3 ft 3 + 3 ⁄ 8 in) (metre gauge) making the whole system metre gauge. [19] 1,435 mm (4 ft 8 + 1 ⁄ 2 in)

  8. List of metric units - Wikipedia

    en.wikipedia.org/wiki/List_of_metric_units

    The barn (b) is a unit of area used in nuclear physics equal to one hundred femtometres squared (100 fm 2 = 10 −28 m 2). The are (a) is a unit of area equal to 100 m 2. The decare (daa) is a unit of area equal to 1000 m 2. The hectare (ha) is a unit of area equal to 10 000 m 2 (0.01 km 2).

  9. Metre-stick - Wikipedia

    en.wikipedia.org/wiki/Metre-stick

    A metrestick divided into 1,000 mm and labeled with 100 cm. A metre-stick, metrestick (or meter-stick and meterstick as alternative spellings); [1] or yardstick [2] is either a straightedge or foldable ruler used to measure length, and is especially common in the construction industry.