Momme (unit)

As a measurement, Momme is part of a table of Japanese units where during the Edo period it was equal to 1⁄10 ryō (aka Tael).

Since the Meiji era 1 momme has been reformed to equal exactly 3.75 grams in SI units.

[2] The latter term for Momme refers to when it was used as a unit of currency during the Edo period in the form of silver coins.

[2][3] As a term, the word "Momme" and its symbol "匁" are unique to Japan.

[6] The Japanese word Momme first appeared in a family book by the Ōuchi clan during the Bunmei era in 1484.