The Meter, for 



LENGTH 



THE METRIC SYSTEM. 



Units. The most commonly l'si'.d di\-isions and multiples. 



Cefitimcit-r (cm), l/loo mett-r; Millimeter (mm), 

 i/iooo iTieter; Micron (/;), i/iooo millimeter. The 

 micron is the unit in micrometry. 

 Kiloniett'r^ looo meters; used in measuring roads and other 

 long distances. 



^ P f ( ^^i^^K?^''-'^'^^ ("""g)' I/IOOO gram. 



"^ ^ ' \ Jiilo9'^a?!i, lOOO erams, used fur cirdinai^y masses, Hke 



WEIGHT -^ .' ^ ^ 



( groceries, etc. 

 The Liter, for \ Cubic Cen/iinetcr (cc), i/iooo liter. This i.s nn.ire 



CAPACITY. . .. I cumnion thun the correct form. Milliliter. 



Divisions of the iinils arc indicated by Latin prefixes: deci, i/io; eenti, 

 l/ioo; milli, i/iooo. 



Miilliples are designated by Greek prefixes: deka, lo times; hecio, lOO 

 times; kilo, lOOO times; vivria^ 10,000 times. 



TABLE OF METRIC AND ENGLISH MEASURES. 



Meter =r= 100 centimeters, 1000 millimeters, 1,000,000 mien nis, 30.-^704 

 inches. 



Millimeter (mm) = 1000 micrcjns, i/io millimeter, i/iooo meter, 1/25 inch, 

 approximately. 



Micron (//) (unit of measure in iTiicrometry)^i/lc>oo www. i/ioooooo me- 

 ter {0.000039 inch), 1/25000 inch, approximately. 



Inch (in.) = 25.399772 mm (25.4 mm, approx.). 



Liter ■=^ 1000 milliliters or 1000 cubic centimeters, i quart (approx.). 



Cubic centimeter (cc or cctm) — i/iooo liter. 



Fluid ounce (8 iiuidrachms) = 29.578 cc (30 cc, approx.). 



Gram — 15.432 grains. 



Kih.igram (kilo) rir 2.204 avnirdupois pounds [2.\ pounds, approx.). 



Ounce Avoirdupois (437A grains) = 28. 349 grams / (30 grams, 



Ounce Trc>y or Apotiiecaries' (4S0 grains) = 31.103 grams '\ approx.). 



TEMPERATURE. 



To change Centigrade to Fahrenheit: (C. X |) +32 — F. For example, to 

 find the eqnivalent r,f 10° Centigrade, C. z= 10°, (io° X |) + 32 = 50" Y. 



To cliange Fahrerdieit to Centigrade: iF. — 32°) X % =^ C. For example. to 

 Tedure50 Fahrenheit to Centigrade. F. = 50", and (50°— 32°) x % = 10° C. ; 

 or — 40° Fahrenheit to Centigrade, F. = —40% (— 40°— 32°) = — 72*, 

 whence — 72* x ^ = — 4°'' ^- 



— From '■■The MitrosiOj>e" {by S. II. Gage) by permissiotu 



