The GB/T 6463-2005 standard outlines a variety of metal and other inorganic coating thickness Measuring methods, including Destructiveness and non-Destructiveness techniques, such as double beam of light Microscope method, magnetic method, eddy current method, etc. The standard describes the working principle of these methods and their application scope, and helps to select the appropriate measurement technology to accurately evaluate the thickness of the coating and ensure that the material performance meets the requirements.