Span (unit of length)
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
1: Hand = 4 inches = 10.16 cm
2: Span = 9 inches = 22.86 cm
3: Palm = 3 inches = 7.62 cm
Span is the width of a human hand, from the tip of the thumb to the tip of the pinky finger.
In Slavic languages, the analogue of span is pyad (peti, пядь). It is the width from the tip of the thumb to the tip of the forefinger.