Chain (unit)
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The chain is a unit of length equal to 66 feet, used in both the US customary and Imperial unit systems. It is subdivided into 100 links. There are 10 chains in a furlong, and 80 chains in one statute
The chain is based on the length of Gunter's chain, which is 66 feet (22 yd) long.
Location marker painted on a British railway bridge, showing 112 miles and 63 chains; photograph taken August 2007
Using a DT Ape
Mile
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The mile, sometimes the international mile or statute mile to distinguish it from other miles, is a British imperial unit and United States customary unit of length; both are based on the older Englis
Chain (unit)
…yards), used in both the US customary and Imperial unit systems. It is subdivided into 100 links. There are 10 chains in a furlong, and 80 chains in one statute mile. In metric terms, it is 20.1168 m long. By extension, chainage (running distance) is the distance along a curved or straight survey line from a fixed…
A milestone in the City of Westminster showing the distance from Kensington Road to Hounslow and Hyde Park Corner in miles
The supposed remains of the Golden Milestone, the zero-mile marker of the Roman road network, in the Roman Forum
Milestone on Mountbellew Bridge, erected c. 1760. Distances are given in Irish miles.
Edinburgh's "Royal Mile"—running from the castle to Holyrood Abbey—is roughly a Scots mile long.