Old Measurements (General)

by gerrym , Sunday, August 30, 2009, 21:11 (5638 days ago) @ slowhands

A rod, pole or perch, as a unit of length, was five and a half yards, making the corresponding square measure exactly thirty and a quarter square yards.
Another method of defining an acre is a rectangle one chain by one furlomg, where a chain, 22 yards, is equal to 4 perch; and a furlong, 220 yards, is equal to 10 chains.