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  2. Orders of magnitude (length) - Wikipedia

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

    The nanometre ( SI symbol: nm) is a unit of length in the metric system equal to 10−9 metres ( ⁠ 1 1 000 000 000⁠ m = 0.000 000 001 m ). To help compare different orders of magnitude, this section lists lengths between 10 −9 and 10 −8 m (1 nm and 10 nm). 1 nm – diameter of a carbon nanotube.

  3. 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). ... as long as 120 cm. One cubit was equal to 67 ... DT equivalent to 6 AM standard time.

  4. List of naval guns by caliber - Wikipedia

    en.wikipedia.org/wiki/List_of_naval_guns_by_caliber

    United Kingdom: World War II 120 mm (4.7 in) QF 4.7 inch Mk IX & XII 45-caliber United Kingdom: World War II 120 mm (4.7 in) QF 4.7 inch Mark XI gun 50-caliber United Kingdom: World War II 120 mm (4.7 in) Gonzalez Hontoria de 12 cm mod 1879 Spain: 1879 – 1900s 120 mm (4.7 in) Gonzalez Hontoria de 12 cm mod 1883 Spain: 1883 – 1910s

  5. Shoe size - Wikipedia

    en.wikipedia.org/wiki/Shoe_size

    The typical range lies between 1 ⁄ 2 to 2 ⁄ 3 inch (12.7 to 16.9 mm) for the UK/US size system and 4 ⁄ 3 to 5 ⁄ 3 cm (13.3 to 16.7 mm) for the European size system, but may extend to 1 ⁄ 4 to 3 ⁄ 4 inch (6.4 to 19.1 mm) and 2 ⁄ 3 to 6 ⁄ 3 cm (6.7 to 20.0 mm).

  6. Imperial units - Wikipedia

    en.wikipedia.org/wiki/Imperial_units

    The former Weights and Measures office in Seven Sisters, London (590 Seven Sisters Road). The imperial system of units, imperial system or imperial units (also known as British Imperial [1] or Exchequer Standards of 1826) is the system of units first defined in the British Weights and Measures Act 1824 and continued to be developed through a series of Weights and Measures Acts and amendments.

  7. United Kingdom weather records - Wikipedia

    en.wikipedia.org/wiki/United_Kingdom_weather_records

    United Kingdom weather records. Cambridge Botanic Garden Weather Station where a temperature of 38.7 °C (101.7 °F) was recorded in the 2019 European heat wave. The United Kingdom weather records show the most extreme weather ever recorded in the United Kingdom, such as temperature, wind speed, and rainfall records.

  8. Inch - Wikipedia

    en.wikipedia.org/wiki/Inch

    12 ⁠ ft. Metric ( SI) units. 25.4 mm. A fire hydrant marked as 3-inch. The inch (symbol: in or ″) is a unit of length in the British Imperial and the United States customary systems of measurement. It is equal to ⁠ 1 36 ⁠ yard or ⁠ 1 12 ⁠ of a foot. Derived from the Roman uncia ("twelfth"), the word inch is also sometimes used to ...

  9. Millimetre - Wikipedia

    en.wikipedia.org/wiki/Millimetre

    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. Therefore, there are one thousand millimetres in a metre.