INTERNAL CALIPER FOR MEASURING INSIDE DIAMETER OF GROOVE FOR INSERTING SNAP RING

摘要

The present invention relates to, for example, a snap ring insertion groove inner diameter measuring device for measuring the inner diameter of the snap ring insertion groove formed in the automatic transmission case of a vehicle. Snap ring insertion groove inner diameter measuring device according to the invention the measuring body; A fixed measuring member fixed to one side of the measuring body and having a protrusion inserted into a snap ring insertion groove; A flow meter assembly installed on the other side of the meter body; And a dial gauge installed on the meter body such that instructions can contact the flow meter assembly so as to indicate displacement of the flow meter assembly, and further comprising a master gauge for zeroing the dial gauge. It is characterized by. Therefore, as the projections of the fixed measuring instrument and the flow measuring instrument respectively come in contact with the inner circumferential surface of the snap ring insertion groove, error measurement through the dial gauge is possible. The snap ring insertion groove inner diameter measuring device of the automatic transmission case according to the present invention has an advantage that can be inspected without breaking or cutting the inspection object.