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In the epic poem Sir Gawain and the Green Knight, the Green Knight's axe-head was an ell (45 inches) wide. [15] Ells were also used in the medieval French play The Farce of Master Pathelin to measure the size of the clothing Pierre Pathelin bought. [16] Ells are used for measuring the length of rope in J. R. R. Tolkien's The Lord of the Rings. [17]
The inch is a commonly used customary unit of length in the United States, [7] ... effective on 1 January 1964. [45] The new standards gave an inch of exactly 25.4 mm ...
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 ...
The basic unit of length in the imperial and U.S. customary systems is the yard, defined as exactly 0.9144 m by international treaty in 1959. [2] [5] Common imperial units and U.S. customary units of length include: [6] thou or mil (1 ⁄ 1000 of an inch) inch (25.4 mm) foot (12 inches, 0.3048 m) yard (3 feet, 0.9144 m)
3 feet = 36 inches, the practical base unit, defined as the length of the prototype bar held by the Crown or Exchequer. Ell: 1.143 m: From fingertip of outstretched arm to opposite shoulder, 20 nails = 1 + 1 ⁄ 4 yard or 45 inches. Mostly for measuring cloth. Fathom: 1.829 m
The hand is a non-SI unit of length equal to exactly 4 inches ... in length and 45–90 m (49–98 yd) in width. The recommended field size is 105 m × 68 m ...
Rood – a unit of area or length; Sack – originally a medieval unit of mass, equal to 26 stone (364 pounds, or about 165 kg). Since a unit of dry volume, equal to 24 imperial gallons (about 109 liters). Schoenus – a unit of area or length; Scrupulum – a unit of area, mass, or time; Seam – a unit of mass or volume; Seer – a unit of ...
Units of length and area (the inch, foot, yard, ... and 50–100 yd or 45.7–91.4 m wide, giving an area of 5,000 to 13,000 sq yd or 4,181 to 10,870 m 2).