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  2. Square inch - Wikipedia

    en.wikipedia.org/wiki/Square_inch

    The following symbols are used to denote square inches: square in; sq inches, sq inch, sq in; inches/-2, inch/-2, in/-2; inches^2, inch^2, in^2; inches 2, inch 2, in 2 (also denoted by "2) historic engineering drawings ″ (number with a square & a double apostrophe, both as an exponent) The square inch is a common unit of measurement in the ...

  3. Imperial and US customary measurement systems - Wikipedia

    en.wikipedia.org/wiki/Imperial_and_US_customary...

    The names of most derived units of measure in the imperial and US customary systems are concatenations of the constituent parts of the unit of measure, for example the unit of pressure is the pounds [force] per square inch.

  4. Comparison of the imperial and US customary measurement ...

    en.wikipedia.org/wiki/Comparison_of_the_imperial...

    Wine was measured with units based on the wine gallon of 231 cubic inches (3.785 L), beer was measured with units based on an ale gallon of 282 cubic inches (4.621 L) and grain was measured with the Winchester measure with a gallon of approximately 268.8 cubic inches (one eighth of a Winchester bushel or 4.405 L). In 1824, these units were ...

  5. United States customary units - Wikipedia

    en.wikipedia.org/wiki/United_States_customary_units

    For measuring length, the U.S. customary system uses the inch, foot, yard, and mile, which are the only four customary length measurements in everyday use. From 1893, the foot was legally defined as exactly 1200 ⁄ 3937 m (approximately 0.304 8006 m). [13] Since July 1, 1959, the units of length have been defined on the basis of 1 yd = 0.9144 ...

  6. English units - Wikipedia

    en.wikipedia.org/wiki/English_units

    30.25 square yards. A square rod is also known as a square pole or a square perch. Sometimes the word 'square' is omitted when the context clearly indicates that the subject is area, notably so in the case of British allotment gardens. Rood: 1,012 m 2: One quarter of an acre; one 'furlong' in length by one 'rod' in width; 40 square 'rods'. The ...

  7. 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.

  8. Hand (unit) - Wikipedia

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

    Thus, a horse that measures 60 inches is 15 hands high (15 × 4 = 60) and a horse halfway between 15 and 16 hands is 15.2 hands, or 62 inches tall (15 × 4 + 2 = 62) [5] [7] Because the subdivision of a hand is a base 4 system, a horse 64 inches high is 16.0 hands high, not 15.4. [2]

  9. List of unusual units of measurement - Wikipedia

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

    Following the so-called "quarter-girth formula" (the square of one quarter of the circumference in inches multiplied by 1 ⁄ 144 of the length in feet), the notional log is four feet in circumference, one inch of which yields the hoppus board foot, 1 foot yields the hoppus foot, and 50 feet yields a hoppus ton.