CONVERSION TABLE OF ENGLISH UNITS 
TO METRIC UNITS. 
Measures of Length: 
1 inch = 2.54 centimeters. 
1 foot = 30.48 PA 
Measures of Surface: 
1 square inch = 6,45 square centimeters. 
foe £00t =) 929 os oo 
Measures of Capacity: 
1 eubie inch = 16.38 cubic centimeters, 
fom 100t, = 28316  “ ns 
Measures of Weight: 
1 pound = 0.453 kilogram. 
1 hundredweight — 50.8 kilograms. 
1 ton, 2240 lbs., = 1016.04 kilograms. 
Measures of Temperature: 
9 degrees Fahrenheit — 5 degrees C. 
Temperature Fahrenheit = %C° + 32. 
VARIOUS CONSTANTS. 
Weight of Materials: 
Copper weighs 0.32 lb. per cubic inch; or 8.86 kg. per cubic 
decimeter. 
Wrought iron weighs 0.28 Ib. per cubic inch; or 7.75 kg. per 
cubie decimeter. 3 
