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[Page 359]

WEIGHTS AND MEASURES - Continued

AVOIRDUPOIS WEIGHT

27,34375 Troy grains = 1 drachm
16 drachms   ..      .. = 1 ounce
16 ounces     ..      .. = 1 pound
28 pounds     ..      .. = 1 quarter
 4 quarters    ..      .. 1 hundredweight
20 cwt.  ..      ..      .. = 1 ton (cwt.)
2240 pounds ..     .. = 1 ton
1 pound Avoirdupois = 7,000 grains Troy

 

MEASURE OF SOLIDITY

1728 cubic inches = 1 cubic foot
    27 cubic feet         .. = 1 cubic yard
    40 cubic ft. of merchandise = 1 shipping ton
    42 cubic ft. of timber = 1 shipping ton
 108 cubic feet         .. = 1 stack of wood
Tons of displacement of a ship  = 35 cubic feet
A load of earth is 27 cubic feet    
A load of bricks is 500    

 

TROY WEIGHT

(For gold, silver, jewels and in chemical experiments)

 4 grains      .. = 1 carat
24 grains     .. = 1 pennyweight (dwt.)
20 pennywts. =  1 ounce (oz.)
12 ounces or 5,760 grains =  1 pound (lb.)

Articles of jewellery are marked in accordance with the fineness of the gold. "20 carats" means 20 parts out of 24 are pure gold; 18 carats = 18 out of 24, 12 carats = 12 out of 24, and so on.

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