Features: 100% brand new and high quality Comes with a color scale at the micron level. With a magnetic tip, it can be glued on any surface or difficult to reach. The thickness of the varnish and the putty is measured by contacting the tip of the tester with the magnet of the test surface (the surface must be clean and free of dust). With a precision of 20 microns. It is used to increase the thickness of paint coatings invisible to the naked eye of steel and galvanized steel vehicles. No battery required. Know how. Waterproof, high precision and reliability are easy to use. Durable and practical. Package Includes: 1x Paint Thickness Tester Specifications: Material: Plastic+Magnet Size: Approx.17.8cm/7.01in note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.