With forearm vertical, forefinger pointing up, move the hand in a small horizontal circle. Regular signals follow. Palm up, fingers closed, thumb pointing in direction of motion, jerk the hand horizontally. Arm extended, palm down, hold the position rigidly. Arm extended, palm down, move the hand rapidly right and left.
Crane operator spreads both hands apart, palms up.
Arm extended, fingers closed, thumb pointing upward. Arm extended, fingers closed, thumb pointing downward. Arm extended, fingers closed, thumb pointing upward, other arm bent slightly with forefinger pointing down and rotate hand in horizontal circles. Both fists in front of body with thumbs pointing toward each other. Both fists in front of body with thumbs pointing outward.