Hand-derived units of measurement:
1: Shaftment
2: Hand or handbreadth, commonly used to represent the width of the palm, sometimes including the thumb when closed against the palm
3: Palm, sometimes also represented by four fingers held together, which is slightly less than the true width of the palm at the knuckle
4: Span
5: Finger or fingerbreadth
6: Digit slightly smaller than a finger)
1: Shaftment
2: Hand or handbreadth, commonly used to represent the width of the palm, sometimes including the thumb when closed against the palm
3: Palm, sometimes also represented by four fingers held together, which is slightly less than the true width of the palm at the knuckle
4: Span
5: Finger or fingerbreadth
6: Digit slightly smaller than a finger)
A finger (sometimes finger-breadth), is usually seven eighths of an inch or 2.2225 cm (for the international inch). The width of an adult human male finger tip is indeed about two centimetres. The inch, on the other hand, originates in the breadth of a thumb.[citation needed] In English this unit has mostly fallen out of use
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