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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.
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 ...
Rod-shaped bacterium, a shape of bacteria such as E. coli; Rod (optical phenomenon), a photographic artifact claimed by some to be alien life; Rod (unit), an Imperial unit of length, also known as the pole or perch; Rod cell, a cell found in the retina that is sensitive to light/dark (black/white) Real-time outbreak and disease surveillance (RODS)
A measuring rod is a tool used to physically measure lengths and survey areas of various sizes. Most measuring rods are round or square sectioned; however, they can also be flat boards. Some have markings at regular intervals. It is likely that the measuring rod was used before the line, chain or steel tapes used in modern measurement. [1]
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This page was last edited on 10 September 2023, at 17:44 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
Seems the value of a perch varied from 18-24' in the 1300's, and even in 1820, was between 16.5 and 25'. See the talk page at perch (area).I feel it would serve better to move the perch length info to a unified perch page that encompasses both length and area definitions, reflecting at least 600 years of use, and perhaps even explaining how one got to include the other, with a link here to ...
This page was last edited on 15 September 2024, at 22:43 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.