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There are a number of different definitions of the chain, from 50 to 100 [[Foot (unit of length)|feet]] long. In the imperial system, one chain is equal to 66 feet or 20.1168 [[metre]]s. This is also called a ''[[#Gunter's chain|Gunter's chain]]'', ''[[surveyor]]'s chain'' or ''land chain''.
There are a number of different definitions of the chain, from 50 to 100 [[Foot (unit of length)|feet]] long. In the imperial system, one chain is equal to 66 feet or 20.1168 [[metre]]s. This is also called a ''[[#Gunter's chain|Gunter's chain]]'', ''[[surveyor]]'s chain'' or ''land chain''.
== History and usage ==
==History and usage==
The chain was originally called an "acre's breadth", because it was the width of a [[acre]], while a [[furlong]] was the length.
The chain was originally called an "acre's breadth", because it was the width of a [[acre]], while a [[furlong]] was the length.
In England, it is still used in old railways, along with miles. The length of a [[cricket pitch]] is one chain.
In England, it is still used in old railways, along with miles. The length of a [[cricket pitch]] is one chain.
== Gunter's chain ==
==Gunter's chain==
The Gunter's chain is the standard unit.
The Gunter's chain is the standard unit.
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==Other websites==
== Chain (unit) Media ==
<gallery widths='160px' heights='100%' mode='traditional' caption=''>
File:Bridge miles and chains.jpg|Location designator painted on a British railway bridge, showing 112 miles and 63 chains; photograph taken August 2007
</gallery>
== Other websites ==
* [http://www.pballew.net/arithm16.html#gunter Math Words] {{Webarchive|url=https://web.archive.org/web/20100618055137/http://pballew.net/arithm16.html#gunter |date=2010-06-18 }}
* [http://www.pballew.net/arithm16.html#gunter Math Words] {{Webarchive|url=https://web.archive.org/web/20100618055137/http://pballew.net/arithm16.html#gunter |date=2010-06-18 }}
* [http://www.unc.edu/~rowlett/units/introd.html How Many? A Dictionary of Units of Measurement]
* [http://www.unc.edu/~rowlett/units/introd.html How Many? A Dictionary of Units of Measurement] {{Webarchive|url=https://web.archive.org/web/20061214013458/http://www.unc.edu/~rowlett/units/introd.html |date=2006-12-14 }}
* [http://www.orbitals.com/self/survey/chain/chain.html How to make a Gunter's Chain]
* [http://www.orbitals.com/self/survey/chain/chain.html How to make a Gunter's Chain]
[[Category:Old units of measurement]]
[[Category:Old units of measurement]]
[[Category:Units of length]]
[[Category:Units of length]]