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The rod, perch, or pole (sometimes also lug) is a surveyor's tool [1] and unit of length of various historical definitions. In British imperial and US customary units, it is defined as 16 + 1 ⁄ 2 feet, equal to exactly 1 ⁄ 320 of a mile, or 5 + 1 ⁄ 2 yards (a quarter of a surveyor's chain), and is exactly 5.0292 meters.
Table of equivalences English unit SI ("metric") Relationship Square rod: 25.29 m 2: 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
Conversions between units in the metric system are defined by their prefixes (for example, 1 kilogram = 1000 grams, 1 milligram = 0.001 grams) and are thus not listed in this article. Exceptions are made if the unit is commonly known by another name (for example, 1 micron = 10 −6 metre).
metric equivalent foot (French measure or Paris foot) 12.789 inches: ≈ 32.48 cm arpent, as a measure of length: 180 feet (French measure) ≈ 58.47 m arpent, as a measure of area: 32 400 square feet (French measure) ≈ 3,418.89 m 2: perch, as a measure of length: 18 feet (French measure) ≈ 5.85 m perch, as a measure of area: 324 square ...
Comparison of 1 rood (unit) with some Imperial and metric units of area Rood is an English unit of area equal to one quarter of an acre [ 2 ] or 10,890 square feet, exactly 1,011.7141056 m 2 . A rectangle that is one furlong (i.e., 10 chains , or 40 rods) in length and one rod in width is one rood in area, as is any space comprising 40 perches ...
Length; system unit code (other) symbol or abbrev. notes conversion factor/m combinations SI: gigametre: Gm Gm US spelling: gigameter 1.0 Gm (620,000 mi) megametre: Mm Mm US spelling: megameter
The Weights and Measures Act 1897 authorized the use of metric units for trade; a list of metric to imperial equivalents being published the following year. [ 20 ] Under the Weights and Measures Act 1824 custody of the standard yard and pound and custody of the administration of weights and measures was entrusted to the Exchequer but ...
perch, used variously to measure length or area; acre and acre's breadth; furlong; mile; The best-attested of these is the perch, which varied in length from 10 to 25 feet, with the most common value (16 1 ⁄ 2 feet or 5.03 m) remaining in use until the twentieth century. [1] Later development of the English system continued in 1215 in the ...