Uncia (unit)

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Roman inch
Unit system Roman
Unit of length
Symbol 𐆑 
Unit conversions
1 𐆑 in ... ... is equal to ...
   SI base units    24.6 mm
   U.S. customary    0.97 in

The uncia (plural: unciae) was a Roman unit of length, weight, and volume. It survived as the Byzantine liquid ounce (Greek: ουγγία, oungía) and the origin of the English inch, ounce, and liquid ounce.

The Roman inch was equal to 112 of a Roman foot (pes), which was standardized under Agrippa to about 0.97 inches or 24.6 millimeters.

The Roman ounce was 112 of a Roman pound.

See also[edit]