USEFUL TO THE MICEOSCOPIST 



mi 



Grain, gr. . 

 Scruple, 3 . 

 Drachm, 5 

 Ounce, 5 



WEIGHT 



Apothecaries' 



= 6-479892 Centigrammes. 



. . = 20 gr. = 1-29598 Gramme. 

 = 33= 60 gr. = 3-88794 Grammes. 



= 8 5 = 480 gr. = 3-11035 



Decagrammes. 



Avoirdupois 



Grain, gr = 



Drachm, dr = 27'34375 gr. = 



Ounce, oz. . . . =16 dr. = 437'5 gr. = 

 Pound, Ib. . . . =16 oz. = 7000 gr. = 



Stone, st. ... = 14 Ib 



Quarter, qr. . . = 28 Ib = 12-70059 



Hundredweight, cwt. = 4 qr = 50-80235 = '50802 Quintal. 



Ton =20 cwt = 1-01605 Tonne. 



1 Ib. Avoirdupois = -822857 Ib. Troy or Apothecaries'. 

 1 Ib. Troy or Apothecaries = 1-21527 Ib. Avoirdupois. 



6-479892 Centigrammes. 

 1-77185 Gramme. 

 2*83495 Decagrammes. 

 4-5359243 Hectogrammes. 

 6-35029 Kilogrammes. 



TABLE OF METRIC MEASURES AND WEIGHTS, WITH THEIR 



ENGLISH EQUIVALENTS 



The metre was originally intended to be the TTrWtriTinJ t h P art of the 

 distance from the pole of the earth to the equator, measured along a 

 certain meridian, but owing to an error its length is too short. The 

 metre is therefore the length of a definite standard in Paris. 



LENGTH 



Micron, i.e. 

 Millimetre . 

 Centimetre . 

 Decimetre . 

 METRE . . 



Decametre . 



Hectometre 



Kilometre 



Millimetre . 

 = 3^ Centimetre 

 = 3^ Decimetre . 

 = tV Metre . . 

 = Unit .... 



= 10 Metres . . . 

 = 10 Decametres . 

 = 10 Hectometres . 



Milliare . 

 Centiare . 

 Deciare . 

 Are = Unit 

 Hectare . 



= -00003937 Inch. 

 = -03937 



39370 



= 3-93701 Inches. 

 = 3-28G84 Feet. 

 = 1-093614 Yard. 

 = 1-98839 Pole. 

 = 4-97097 Chains. 

 = 4-97097 Furlongs. 

 = -6213716 Statute Mile. 



5389714 Geographical Mile. 

 = -5396124 Knot. 



SUPERFICIES 



= 10 Sq. Decimetres = 1-07639 Sq. Ft. = 155-0006 Sq. In. 

 = 1 Metre 1-19599 Square Yard. 



10 Metres 11-95992 Yards. 



1 Decametre =119-59921 



1 Hectometre = 2-47106 Acres. 



VOLUME 



Millistere . . = 1 Cubic Decimetre = 61-0239 Cubic Inches. 



Centistere . . =10 Decimetres = 610-239 



Decistere . . = 100 3-531476 Feet. 



Stere = Unit . = 1 Metre 1-30795 Yard. 



Decastere . . =10 Metres = 13-07954 Yards. 



Hectostere . . = 10 Decasteres = 130-7954 



