BASIC Surveying Manual
660' x 66' = 43,560 sqft (acre) Figure 2: Surveyor's Chain Other multiples of the chain are still in use today. A furlong, used in horse racing, is 10 chains, or 660 feet. A rod is 1/4 of a chain or 16.5 feet. Rods are commonly used in early highway right-of way descriptions. The Wisconsin Statutes still describe right-of-way as 3 or 4 rods.