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)