14 APPLIED SCIENCE 



thirtieth of an ounce. The unit of volume is the liter which is a 

 little larger than a quart. The gram is the weight of one cubic 

 centimeter of pure distilled water at a temperature of 39.2 

 Fahrenheit; the kilogram is the weight of one liter of water; 

 the metric ton is the weight of one cubic meter of water. 



The principal advantage of the metric system consists in 

 the use of decimal subdivisions and ease in calculations. The 

 principle of the metric system is sound, but since there is no 

 exact equivalent between the metric and English systems it is 

 difficult to use the former for practical purposes where ma- 

 chines and formulas have been made according to the English 

 system. 



17. Table of Metric Measurements. The metric system 

 of weights and measures comprises the following tables. 

 The symbols used to express the various units of measure- 

 ment in abbreviated form are also given: 



MEASURES OP LENGTH 



10 millimeters (mm.) = 1 centimeter (cm.) 



10 centimeters = 1 decimeter (dm.) 



10 decimeters = 1 meter (m.) 



10 meters = 1 dekameter (Urn.) 



10 dekameters = 1 hektometer (hm.) 



10 hektometers = 1 kilometer (km.) 



MEASURES OF SURFACE (NOT LAND) 



100 square millimeters (mm.) = 1 square centimeter (sq. cm.) 

 100 square centimeters = 1 square decimeter (sq. dm.) 



100 square decimeters = 1 square meter (sq. m.) 



MEASURES OF VOLUME 



1000 cubic millimeters (mm.) = 1 cubic centimeter (cu. cm.) 

 1000 cubic centimeters = 1 cubic decimeter (cu. dm.) 



1000 cubic decimeters = 1 cubic meter (cu. m.) 



