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  2. Orders of magnitude (length) - Wikipedia

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

    The centimetre (SI symbol: cm) is a unit of length in the metric system equal to 10 −2 metres (⁠ 1 / 100 ⁠ m = 0.01 m). To help compare different orders of magnitude, this section lists lengths between 10 −2 m and 10 −1 m (1 cm and 1 dm). 1 cm – 10 millimeters; 1 cm – 0.39 inches; 1 cm – edge of a square of area 1 cm 2

  3. Help:Convert units - Wikipedia

    en.wikipedia.org/wiki/Help:Convert_units

    10 6: 1 000 000: kilo k 10 3: 1 000: hecto ... A hand is a unit of length used to measure the height of ... hand}} → 9.2 + 1 ⁄ 2 hands (38.5 inches; 98 cm ...

  4. Unit of length - Wikipedia

    en.wikipedia.org/wiki/Unit_of_length

    Centimeters (cm) are avoided as they cause confusion when reading plans. For example, the length two and a half meters is usually recorded as 2500 mm or 2.5 m; it would be considered non-standard to record this length as 250 cm. [7] [8]

  5. Tree height measurement - Wikipedia

    en.wikipedia.org/wiki/Tree_height_measurement

    American Forests, for example, uses a formula to calculate Big Tree Points as part of their Big Tree Program [3] that awards a tree 1 point for each foot of height, 1 point for each inch (2.54 cm) of girth, and ¼ point for each foot of crown spread. The tree whose point total is the highest for that species is crowned as the champion in their ...

  6. Ring size - Wikipedia

    en.wikipedia.org/wiki/Ring_size

    Ring size is a measurement used to denote the circumference ... where whole sizes differ by 0.032 inches (0.81 mm) ... 6 + 1 ⁄ 2: M + 1 ⁄ 2: 13: 13: 13.1 ...

  7. Medieval weights and measures - Wikipedia

    en.wikipedia.org/wiki/Medieval_weights_and_measures

    tomme – Thumb (inch), 1 ⁄ 12 fot, approx. 2.61 cm. This unit was commonly used for measuring timber until the 1970s. Nowadays, the word refers invariably to the Imperial inch, 2.54 cm. kvarter – Quarter, 1 ⁄ 4 alen. fot – Foot, 1 ⁄ 2 alen. From 1824, 31.374 cm. alen – Forearm, 62.748 cm from 1824, 62.75 cm from 1683, 63.26 cm from ...

  8. List of unusual units of measurement - Wikipedia

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

    This was an official unit of measurement in South Africa until the 1970s, and was defined in November 2007 by the South African Law Society as having a conversion factor of 1 morgen = 0.856 532 hectares. [28] This unit of measure was also used in the Dutch colonial province of New Netherland (later New York and parts of New England). [29] [30]

  9. International System of Units - Wikipedia

    en.wikipedia.org/wiki/International_System_of_Units

    The conversion between different SI units for one and the same physical quantity is always through a power of ten. This is why the SI (and metric systems more generally) are called decimal systems of measurement units. [10] The grouping formed by a prefix symbol attached to a unit symbol (e.g. ' km ', ' cm ') constitutes a new inseparable unit ...