Furlong the fundamental unit of land measurement. A furlong was forty rods, an acre four by 40 rods, or four rods by one furlong, and thus 160 square rods. At the time, the Saxons used the North German foot, which was 10 percent longer than the foot of today. When England changed to the shorter foot in the late 13th century, rods and furlongs remained unchanged, since property boundaries were already defined in rods and furlongs. The only thing that changed was the number of feet and yards in a rod or a furlong, and the number of square feet and
Furlong leading to serious complications in trade, taxation, etc. Around the year 1300, by royal decree England standardized a long list of measures. Among the important units of distance and length at the time were the foot, yard, rod (or pole), furlong, and the mile. The rod was defined as yards or feet, and the mile was eight furlongs, so the definition of the furlong became 40 rods and that of the mile became 5,280 feet (eight furlongs/mile times 40 rods/furlong times feet/rod). A description from 1675 states, "Dimensurator or Measuring Instrument whereof the mosts usual has been the Chain, and