The Hand Signals ClipArt gallery provides 38 examples of hand and finger positions with specific meanings, particularly as used in trading commodities.
Detail of the hand of Jesus raised in blessing in an engraving by Lazarus Gottlieb Sichling from an…
"To announce range, extend the arm toward the leaders or men for whom the signal is intended, fist closed;…
"To change elevation, indicate the amount of increase or decrease by fingers; point upward to indicate…
"Extend the arm horizontally toward the platoon leader; describe small circles with the hand." —…