Use controlled screw tightening in the range 20 120 nm for use in all areas of industrial manufacturing features torque wrench with 12 single square drive for controlled clockwise tightening type b no 8561 or double square drive for bi directional tightening type bl no 8566 12 square drive with ball locking device din 3120 a 12 5 iso 1174 acc to din en iso 6789 traceable to national standards automatic short path actuation with tactile impulse and audible signal