Gunter's chain definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a surveyor's chain 66 ft (20.117 m) in length: it consists of 100 links, each 7.92 in (20.117 cm) long
Origin: after E. Gunter (1581-1626), Eng mathematician who invented it
Gunter's chain definition by American Heritage Dictionary
Origin: After Edmund Gunter.