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weights and measures.
 
avoirdupois weight.
437.5 grains (gr.)
=
 1 ounce oz.
16 ounces
=
 1 pound lb.
100 pounds
=
 1 hundredwright cwt.
20 cwt., or 2,000 lb
=
 1 ton T.
1 T. = 20 cwt. = 2,000 lb. = 32,000 oz. = 14,000,000 gr.
The avoirdupois pound contains 7,000 grains
long ton table.
16 ounces
=
 1 pound lb
112 pounds
=
 1 hundredweight cwt
20 cwt., or 2,240 lb.
=
 1 ton T.
troy weight.
24 grains (gr.)
=
 1 pennyweight pwt.
20 pennyweights
=
 1 ounce oz.
12 ounces
=
 1 pound lb.
dry measure.
2 pints (pt.) = 1 quart qt.
8 quarts = 1 peck pk.
4 pecks = 1 buchel bu.
1 bu. = 4 pk. 32 qt. = 64 pt.

The U. S. struck bushel contains 2,150.42 cu.in = 1.2444 cu. ft. By law, its dimensions are those of a cylinder 18⅛ in. in diameter and 8 in. in depth. The heaped bushel is equal to 1¼ struck bushels, the cone being 6in high. The dry gallon contains 268.8 cu. in., being ⅛ of a struck bushel.

For approximations, the bushel may be taken at 1¼ cu. ft.; or a cubic foot may be considered 4/5 of a bushel.

The British bushel contains 2,218.19 cu. in. = 1.2837 cu. ft. = 1.032 U. S. Bushels.

 
useful tables
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