A metric unit of mass equal to exactly 200 mg, chiefly used for measuring stones and pearls .
(mero)
Any of several small units of mass used for measuring stones and pearls, equivalent to 189–212 mg.
A 24-point scale used to measure the purity of gold.
(ux)
(l)
(l) (measure of purity of gold)
(inflection of)
(infl of)
(l), karat