Span (unit of length)

Three archaic hand units of measurment:
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.

1 span 

= 9 inches

= 0.2286 m

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.

1 pyad 

= 4 vershok

= 7 inches

= 0.1778 m