Bullet Points:1、Micron-level Color Scale: Comes with a micron-level color scale.2、Easy to Paste: With a magnetic tip, it can be glued to any surface or hard to reach.3、Accurate Thickness: The thickness of the varnish and 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).4、An Accuracy of 20 Microns: Used to coat the thickness of the lacquer with an accuracy of 20 microns. Quickly and accurately check if the vehicle has been painted in the past.5、Waterproof and Durable: It is used to increase the thickness of paint coatings that are invisible to the naked eye of vehicles made of steel and galvanized steel. No battery required. Craftsmanship. Waterproof, high precision and reliability are easy to use. Durable and practical.Auto Paint Test Auto Paint Thickness Tester Meter Gauge Crash Checking Test Paint Tester With Magnetic Tip ScaleThe individual colors on the scale give:Blue: Coating thickness 0.0-100 microns - a thin layer of varnish (no foundation or re-polished varnish)Green: The original varnish has a thickness of 100 to 200 microns. Warning; in newer models, a thickness of 180 microns can represent a thin layer of the second varnish.Yellow: The coating thickness is 200-300 microns after the paint has been repaired ("second varnish").Red: The coating thickness is 300-520 microns - the surface after repair of the metal plate + the second layer of varnish.Black: The coating thickness exceeds 520 - the surface putty and varnish (the amount of putty is approximately 0.5mm)Feature:With a micron-level color scale.With a magnetic tip, it can be glued to any surface or hard to reach.The thickness of the varnish and 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).Used to coat the thickness of the lacquer with an accuracy of 20 microns.Quickly and accurately check if the vehicle has been painted in the past.It is used to increase the thickness of paint coatings that are invisible to the naked eye of vehicles made of steel and galvanized steel. No battery required. Craftsmanship. Waterproof, high precision and reliability are easy to use. Durable and practical.Package included:1*Paint thickness tester