Instrument for measuring internal diameter of tyre mould

The utility model relates to an instrument for measuring internal diameter of tyre mould. Its technical scheme is: the lower part of the upper portion at the urceolus is fixed with the amesdial through fastening screw, is equipped with the box thread on the inner wall of urceolus, and through female threaded connection in -connection pole, the ring is right to the outside cover of urceolus including, connecting rod is connected with the gauge head through screw cap, be equipped with the lug on rightting the inner wall of ring, be equipped with the longitudinal Groove slide rail on the outer wall of urceolus, right the ring and insert the groove slide rail in -connection with the urceolus through the lug. The beneficial effects of the utility model are that: the utility model discloses can right the measuring stick, avoid because the deviation appears in the great measured data of leading to of measuring stick slope, influence tire mould utensil inside diameter measurement's accuracy, and the device's measurin