How to measure the inner hole of 580

Measure the inner hole of 580 with vernier caliper or inner diameter caliper. First, measure the "zero error" of the caliper to ensure the accuracy of the measurement results. Then put the caliper into the inner hole and adjust the measuring position to ensure that it is perpendicular to the axis of the inner hole. Read the scale value on the caliper and take the average value as the inner hole diameter. Pay attention to whether the scale line of the caliper is clear and whether it is dry during inspection. At the same time, it is necessary to maintain the caliper and inner diameter caliper to maintain their accuracy and reliability and meet the needs of actual production.