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WEIGHTS & MEASURES
AVOIRDUPOIS
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100 kilos = 267 93 lbs. Troy or 220 462 lbs. Avoir.
Cwt. Qrs, St.
Lbs. Oz. Drs.
Grs.
Equivalents
Ton; tonneau 20 80 160 2240
1,016*0475 kilos
Hundredweight:
quintal: 4 8 112
50"8024
Quarter;
Stone; pierre :
Pound; livre :
Ounce; once Avdp
Dram; drachme
Grain Troy
28
12-7006 —
14
6-3503 —
16 256 7000 453-5926 grs.
16 4371/228-3493 —
2711
1-7718 —
6-4799 cgrs.
METRIC CARAT WEIGHTS
FOR PRECIOUS STONES, METALS AND PEARLS
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The weight of precious stones is given in metric carats; a
metric carat is divided into 100 cent-carats. A metric
carat =0-2 gramme.
For pearls the grain is used. The grain equals 1/4 carat or
0-05 gramme and is divided into 100 parts.
There are weights for the carat, multiples and submultiples.
They are used for precious stones and pearls. Special weights
in grains do not exist.
To obtain a weight in grains, multiply by 4 the weight in carats.
1 gramme = 5 carats = (5x4) 20 grains.
1 carat
= 0-2 gramme; 1 grain = 0-05 gramme.
The carat is correctly used as expressing the degree of fine
ness, but not as a weight. Pure gold is described as 24 carats.
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