Use controlled screw tightening in the range 6 30 nm for use in all areas of industrial manufacturing features torque wrench with 14 single square drive for controlled clockwise tightening type am no 8554 or double square drive for bi directional tightening type aml no 8559 14 square drive with ball locking device din 3120 a 6 3 iso 1174 acc to din en iso 6789 traceable to national standards automatic short path actuation with tactile impulse and audible signal