INTRODUCTION. 13 



LENGTH. 



1 inch = 2.54 centimeters. 



1 centimeter = .3937 inch. 

 1 foot = .3048 meter. 



1 meter = 39 . 37 niches 



= 3. 2808 feet. 



SURFACE. 



1 square inch = 6.452 square centimeters. 



1 square centimeter = .155 square inch. 

 1 square foot = .0929 square meter. 



1 square meter = 10 . 764 square feet. 



VOLUME. 



1 cubic inch =16.387 cubic centimeters. 



1 cubic centimeter = .061 cubic inch. 

 1 cubic foot = .02832 cubic meter. 



1 cubic yard = . 7645 cubic meter. 



1 cubic meter =35.314 cubic feet 



= 1 . 308 cubic yards. 



WEIGHT. 



1 ounce avoirdupois = 28 . 35 grams. 

 1 pound = . 4536 kilogram, 



1 kilogram = 2 . 2046 pounds. 



CAPACITY. 



1 cubic foot = 28. 317 liters. 

 1 liter =61.023 cubic niches 



= .03531 cubic foot. 

 1 gallon = 3. 785 liters. 



PRESSURE. 



1 pound per square inch = .070308 kilogram per square inch. 



1 kilogram per square centimeter = 14 . 223 pounds per square inch. 



