1、FLEXIBLE USE: According to the size of the workpiece to be measured, select the corresponding measuring tool with a meter head, and correct the zero position with an outer diameter micrometer, ring gauge or measuring block attachment 2、MEASUREMENT TIPS: When measuring, two probes with meter heads should be extended into the measured part, find the turning point of the pointer, read out the reading value that deviates from zero, that is, the deviation value of the measured size 3、COMFORTABLE AND PRACTICAL: The position of the indicator on the body is fixed in the optimal position, and the long jaws on the caliper are designed for a comfortable and firm grip 4、ACCURATE AND USEFUL: This caliper provides high accuracy measurements up to 0-50x125mm. The meter is equipped with an external fixture design that enhances its functionality 5、MEASURING OBJECT: Caliper with gauge is a practical accurate measuring tool, which can be used to measure inner and outer diameter, deep hole groove diameter, sheet thickness, etc., the detection is intuitive and convenient, and it is an irreplaceable testing tool for general measuring tools