The three-coordinate measuring machine is a new type of high-efficiency precision measuring instrument developed in the past 50 years. Its emergence, on the one hand, is due to the high-efficiency processing of automatic machine tools and CNC machine tools, and the processing of more and more complex-shaped parts requires fast and reliable measuring equipment.

A three-coordinate measuring instrument refers to an instrument that can express measurement capabilities such as geometric shape, length and circumference indexing within the space range of a hexahedron.

During the calibration, the probe of the coordinate measuring machine will be affected by many factors, such as: dirty stylus, wrong input of stylus length, wrong input of sphere diameter, etc., which will affect the accuracy of the measurement.