szu

See also: si

In China, ? - 20th century, a unit of mass, the smallest named unit in Chinese weights. Also romanized as ssŭ.

In the system of weights established for customs purposes in the 18th century by treaties between China and the western powers, called treaty or haikwan weight, the szu was about 3.77994 milligrams. link to a chart showing relationships between Chinese units of mass

Currently, szu (or kung szu) is the Chinese name for the milligram.

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