Shaftment
| International units | |
|---|---|
| 0.152 m | 152.4×10−6 km |
| 152.4 mm | 1.524×109 Å |
| 1.019×10−12 AU | 16.109×10−18 LY |
| US customary / Imperial units | |
| 6 in | 0.5 ft |
| 0.167 yd | 94.697×10−6 mi |
A shaftment, when used as a unit of length, is usually six inches or two palms, i.e. 15.24 cm (for the international inch). It is thought to be the distance from the tip of the outstretched thumb to the other side of the palm.In English this unit has mostly fallen out of use, as have others based on the human arm: digit (1/8 shaftment), finger (7/48 shaftment), palm (½ shaftment) hand (2/3 shaftment), span (1½ shaftments), cubit (3 shaftments) and ell (7½ shaftments).
Categories
Units of length | Human-based units of measure