In order to meet the demanding precision when measuring the thickness of extremely thin coatings, a test fixture is also provided. The use of this test fixture can greatly reduce the error caused by human operation, especially when measuring small workpieces such as nails and bolts. When using the test fixture to measure small workpieces, it is recommended to remove the small black positioning sleeve at the front end of the probe, and re-calibrate the multi-point on the unpainted standard workpiece before measuring.
