AUTO-TIGHTENING The mechanical principle behind CA-type clamps involves a lever operated by an unloosenable cam. When that cam is turned in an anti-clockwise direction, the point F moves in relation to the scale of the ec......AUTO-TIGHTENING The mechanical principle behind CA-type clamps involves a lever operated by an unloosenable cam. When that cam is turned in an anti-clockwise direction, the point F moves in relation to the scale of the eccentricity of the cam (r1
