Units of Measurement
Hectare - | Metric unit of area equal to 10,000 square meters, or 2.471 acres | |||||||||||||||||||||||||||
Acre - | The (English) acre is a unit of area equal to 43560 square feet, or 10 square chains, or 160 square poles or 4840 square yard | |||||||||||||||||||||||||||
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Chain - | Unit of length usually understood to be Gunter's chain , but possibly variant by locale. The name comes from the heavy metal chain of 100 links that was used by surveyors to measure property bounds. | |||||||||||||||||||||||||||
Engineer's Chain - | A 100 foot chain containing 100 links of one foot apiece | |||||||||||||||||||||||||||
Gunter's Chain - | Unit of length equal to 66 feet, or 4 poles. This unit was apparently defined as one tenth of a furlong, a common unit of length in the old days. The mile was redefined from 5000 feet to 5280 feet in order to be an even multiple of furlongs. A mile is 80 chains | |||||||||||||||||||||||||||
Hide - | Old English unit of area usually equal to 120 acres. | |||||||||||||||||||||||||||
Link - | Unit of length equal to 1/100 chain (7.92 inches) | |||||||||||||||||||||||||||
Pole - | Unit of length and area. Also known as a perch or rod . As a unit of length, equal to 16.5 feet. As a unit of area, equal to a square with sides one pole long. An acre is 160 square poles. It was common to see an area referred to as "87 acres, 112 poles", meaning 87 and 112/160 acres. |