Auxiliary detection tool for rapidly detecting wall thickness difference of part

The utility model discloses a detection auxiliary tool for rapidly detecting the wall thickness difference of a part. One end of a cantilever shaft vertically penetrates through one side of a connecting plate and is connected with the connecting plate through a first gasket, a first elastic gasket and a first nut, and the cantilever shaft and the connecting plate are fixed through a set screw; one end of the mandrel vertically penetrates through the other side of the connecting plate and is connected with the connecting plate through a second gasket, a second elastic gasket and a second nut, and the connecting plate can rotate around the mandrel; the axial lead of the cantilever shaft is parallel to the axial lead of the core shaft; the other end of the cantilever shaft penetrates through the bent arm, the bent arm is fixed to the cantilever shaft by tightening the butterfly bolt, and the scale rod is inserted into one end of the bent arm and is perpendicular to the mandrel. The device is simple in design pri