【Pencil scratch method】: Coating hardness is a necessary measure of coating performance. This instrument uses the pencil scratch method. 【Use history】: The pencil scratch method for coating hardness test has been widely used internationally since the 1980s. 【Mechanical】: The instrument is mechanical, with three points, two wheels and a lead core always in contact with the surface to be tested, ensuring that the pencil forms a 45-degree angle with the surface to be tested, pushing the instrument to move, and completing the test process. 【Beautiful and elegant】: The production process of the pencil hardness tester has been comprehensively improved, the slide is brighter, and the overall body is beautiful and elegant.