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For Use in Schools and Colleges

ESPECIALLY HELPFUL TO PUPIL TEACHERS AND

STUDENTS PREPARING FOR EXAMINATION

BY THE REV. J. BARTER

SCIENCE AND ART COLLEGE, PLYMOUTH
LATE CHAIRMAN OF THE PLYMOUTH SCHOOL BOARD

( OUT 1937.

LONDON
DALDY, ISBISTER & CO.
56, LUDGATE HILL

1877

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LONDON: PRINTED BY VIRTUE AND CO., LIMITED,

CITY BOAD.

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AVOIRDUPOIS WEIGHT.
27.34375 troy grains . . = 1 dram.

16 drams . . . . = 1 ounce. · 16 ounces . . . . = 1 pound.

14 pounds . . . . = 1 stone.
28 pounds )

2 stones . . . . = l quarter,
4 quarters make )

.
8 stones

= 1 hundredweight.
20 cwts.

. . = 1 ton.
The 1 lb. avoirdupois = 7000 grains troy.

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APOTHECARIES' WEIGHT.
20 grains . . . . = 1 scruple (Ə).
3 scruples . . . . = 1 dram (3).
8 drams . . . . = 1 ounce (3).
12 ounces .

= 1 pound (1b).

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