Cubit
Ancient Rome
pēkhys) measured approximately 0.46 m (18 in). The short forearm cubit (πυγμή pygmē, lit. "fist"), from the wrist to the elbow, measured approximately 0.34 m (13 in). In ancient Rome, according to Vitruvius, a cubit was equal to ​1 1⁄2 Roman feet or 6 palm widths (approximately 444 mm or 17.5 in). A 120-centimeter cubit (approximately four feet long), called the Roman ulna, was common in the Roman empire, which cubit was measured from the fingers of the outstretched arm opposite the man's hip.; also, with
Cubit-13