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Digit = the width of the index finger |
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Cubit = the length of the arm from the middle finger to the elbow |
| Foot = the length of a grown man's foot (first used by the Romans) |  |
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Span = the width of the hand from the thumb to the little finger with the hand outstretched |
| Fathom = the length from finger tip to finger tip with the arms outstretched |  |