A perch is as a unit of measurement used for length, area, and volume in a number of systems of measurement. Its name derives from the Ancient Roman unit, the pertica.
OriginThe word perch is from the French perche, derived from the Latin pertica, meaning a pole or staff.12 Originating in Roman antiquity, it spread with the Roman Empire and was likely re-introduced to England with the Norman Conquest of 1066. In the Roman Empire, France and England, it also could mean area (square perches), and among operative masons of the Middle Ages, volume.
LengthThe perch as a lineal measure in Rome, was 10 feet (3.0 m), and in France varied from 10 feet (perche romanie) to 22 feet (perche d'arpent - apparently 1/10th of "the range of an arrow". - about 220 feet). To confuse matters further, by ancient Roman definition, an arpent equalled 120 Roman feet.
In England, the perch was officially discouraged in favor of the rod as early as the 15th century3, however local customs maintained its use. In the 13th Century Perches were variously recorded in lengths of 18, 20, 22 and 24 feet (7.3 m); and even as late as 1820, a House of Commons report notes lengths of 16.5, 18, 21, 24, and even 25 feet (7.6 m)4. In Ireland, a perch was standardized at 21 feet (6.4 m), making an Irish chain, furlong and mile proportionately longer by 27.27% than the "standard" English measure.5
The rod as a survey measure was standardized by Edmund Gunter in England in 1607 as one-fourth of a chain (of 66 feet), or 16½ feet (5½ yards) long.
AreaAs a unit of area, a square perch (the perch being standardized to equal 16.5 feet) is equal to a square rod, 30¼ square yards, 25.29 square metres or 0.00625 acres (25.3 m2). There are 40 square perches to a rood, 160 square perches to an acre. This unit was usually referred to as a perch or pole even though square perch and square pole were the more precise terms. Confusingly, rod was used as a unit of area but it meant a rood.
Obviously, regional interpretations of perch would yield different results.
VolumeA traditional unit of volume for stone and other masonry. A perch of masonry is the volume of a stone wall one perch (16.5 feet) long, 18 inches high, and 12 inches thick. This is equivalent to exactly 24.75 cubic feet, 0.916 667 cubic yards, or about 0.700 842 cubic metres.
See also Systems of measurement History of measurement References ^ Websters 20th Century Unabridged Dictionary, ISBN 0-529-04852-3 ^ Wictionary, Perch ^ Encyclopedia Britannica, English measure ^ United Kingdom. House of Commons Report (Second) of Commissioners to Consider the Subject of Weights and Measures, 13 July 1820. Parliamentary Papers 1820. (HC314) Pages 473–512. ^ Units: PTranslations of square perch. square perch synonyms, square perch antonyms. Information about square perch in the free online English ...
www.thefreedictionary.com/
Friday night, UTEP and Houston will square off in a game that will surely see some offensive fireworks. Last year, UTEP defeated 12th ranked Houston, 58-41 in the Sun Bowl, knocking Houston from their perch on top of Conference USA.
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Definition of square perches in the Idioms Dictionary. square perches phrase. What does square perches expression mean? Definitions by the largest Idiom Dictionary.
idioms.thefreedictionary.com/
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Perch Groyne at Morecambe
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Square perch is a measure of area. Get more information and details on the 'square perch' measurement unit, including its symbol, category, and common ...
www.convertunits.com/info/
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Proud Perch Public House Great Linford Milton Keynes
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perform conversions between square perch and other area units
www.unitconversion.org/area/
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Use the following calculator to convert between square perchs and acres. ... Type the value in the box next to "square perch". The result will appear in the box next ...
unitconversion.org/area/
Today's edition of The Press is the first in over a century to be edited and produced outside the newspaper's offices in Cathedral Square.
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eFunda Glossary for Units, Category:Area, Unit name: Square Perch, Unit Symbol: rd^2
www.efunda.com/glossary/units/
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Quickly convert perch into squares (perch to square) using the online calculator for metric conversions and more.
www.convertunits.com/from/
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In Normandy, 13th – 15th centuries?, a unit of land area = 160 square perches (each perch of 22 pieds), = 77,449 square pieds, about 8172 square meters. ...
www.sizes.com/units/acre.htm
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Using the Square Perch To Acre Converter. This online Unit Conversion page allows quick and accurate conversion between many units of measure, from ...
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