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Length/Distance | Convert from button measure to shaftment [ancient] |
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Common Length Conversions Metric Length Conversions Unit Definition (button measure) The button measure is a unit of distance equal to 1/40 inch (0.635 millimeter), used to measure the thickness of buttons. Unit Definition (shaftment [ancient]) 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 do 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).
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