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       1. It is forbidden to shake the X, Y and Z axes to the limit distance during the use of the two-dimensional measuring instrument. In order to avoid the collision of the corresponding coordinate axis, it will affect the error compensation result, so that the measurement result of the second element measuring instrument is not accurate enough. .

       2. When turning on or off the two-dimensional measuring instrument, please make sure that the upper and lower light source switches of the instrument are set to small. At the same time, the light source switch cannot be switched frequently, to avoid the failure of the light source switch circuit.

       3. When measuring the workpiece with the two-dimensional measuring instrument, you should pay attention to placing the workpiece on the glass platform of the two-dimensional measuring instrument workbench to avoid scratching or damaging the mirror surface, resulting in the measurement of the two-dimensional measuring instrument The results are not precise.