Uncia (unit)

Roman inch
Unit systemRoman
Unit oflength
Symbol𐆑
Conversions
1 đ†‘ in ...... is equal to ...
   SI base units   24.6 mm
   U.S. customary   0.97 in

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

The Roman inch was equal to 1⁄12 of a Roman foot (pes), which was standardized under Agrippa to about 0.97 inches or 24.6 millimeters.

The Roman ounce was 1⁄12 of a Roman pound.

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