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MEASUREMENTS USED IN LAND DESCRIPTIONS

Linear Measure
1 link 7.92 inches
1 rod 25 links or 16½ feet or 5½ yards
1 chain 100 links or 4 rods or 66 feet
1 furlong 40 rods (660 feet)
1 mile 8 furlongs or 320 rods or 80 chains or 5,280 feet
 
Square Measure
1 square rod 272¼ square feet (30¼ square yards)
1 square chain 16 square rods
1 acre 160 square rods or 10 square chains or 43,560 square feet or 208¾ feet square
1 square mile 640 acres (one section)
1 township 36 square miles