The inside dial caliper gaugers are attachment to the dial indicator and used for measuring inside diameter, ring groove bottom diameter an inside step diameter or holes of the workpieces. They are such measuring tools an can’t be taken place by other common measuring tools.
     The electronic caliper gauge: Rerolution 0.01(Metric)and 0.0005(inch).

     Caliper gauges can be devide into inside caliper gauges and outside caliper gauges