2 TABLES OF WEIGHTS AND MEASURES 



SQUARE MEASURE 



144 square inches (sq. in.) =1 square foot sq. ft. 



9 square feet =1 square yard sq. yd. 



30J square yards =1 square rod sq. rd. 



160 square rods =1 acre A. 



640 acres =1 square mile sq. mi. 



sq. mi. A. sq. rd. sq. yd. sq.ft. sq. in. 



1 = 640 = 102,400 = 3,097,600 = 27,878,400 = 4,014.489,600 



SURVEYOR'S SQUARE MEASURE 



625 square links (sq. li.) = 1 square rod sq. rd. 



16 square rods =1 square chain sq. ch. 



10 square chains =1 acre A. 



640 acres =1 square mile sq. mi. 



36 square miles (6 mi. square) . = 1 township Tp. 



sq. mi. A. sq. ch. sq.rd. sq.li. 



1 = 640 = 6,400 = 102,400 = 64,000,000 



The acre contains 4,840 sq. yd., or 43,560 sq. ft., and is equal 

 to the area of a square measuring 208.71 ft. on a side. 



Other terms are the pole or perch (P.), which is equal to 

 1 sq. rd. and the rood (R.), which is equal to 40 sq. rd. 



CUBIC MEASURE 



1,728 cubic inches (cu. in.) =1 cubic foot cu. ft. 



27 cubic feet = 1 cubic yard cu. yd. 



128 cubic feet =1 cord cd. 



24} cubic feet =1 perch P. 



cu. yd. cu. ft. cu. in. 

 1= 27 = 46.656 



MEASURE OF ANGLES OR ARCS 



60 seconds(") =1 minute ' 



60 minutes =1 degree 



90 degrees = 1 rt. angle or quadrant . . . E 



360 degrees =1 circle cir. 



1 cir. = 360 = 21, 600' =1,296,000" 



