Detection tool for measuring depth of battery positive electrode ring entering

The utility model discloses a battery positive electrode ring entering depth measuring gauge, which comprises a digital display dial indicator, a dial indicator fixing seat, a battery positioning seat, a plane measuring head and a zero-position correcting block, an arc-shaped limiting groove is arranged on the surface of the dial indicator fixing seat, and a detection rod of the digital display dial indicator is attached to the arc-shaped limiting groove. The end portion of a detection rod of the digital display dial indicator is fixedly connected with the plane measuring head, the detection end of the plane measuring head is matched with the aperture of an inner hole of a to-be-detected battery, the top of the battery positioning seat is fixedly connected with the bottom of the dial indicator fixing seat, and the battery positioning seat is provided with a positioning groove matched with the outer diameter of the to-be-detected battery. The battery positive electrode ring entering depth measuring gauge is si