hello, you can use paint coating thickness comb, roller thickness gauge, ultrasonic thickness gauge, etc. \xd\\xd\ Each edge of this paint coating thickness comb has a certain range of teeth with deeper and deeper depth, so it is called "comb". \xd\ Thickness values can be read at the place of contact. \xd\ is about the size of a credit card and easy to clean. \ xd \ xd \ roller thickness wheel, used to detect the thickness of wet film coating of paint ink. \xd\\xd\ A machined wheel, its eccentric rim is marked with scales, and the gap is gradually increased. Let the wheel roll over the paint during the test. The contact point of the rim indicates the thickness of the film. Four standard scales can be provided: to 1 microns. \xd\\xd\ This roller thickness gauge has three wheels, and the inner circle and two outer wheels form a centrifugal circle. At the zero position, the three wheels are at the same point, and the horizontal scale distance of the inner ring is lower than the wheel surface at any position. \xd\\xd\ When spraying the surface, immediately place the measuring wheel at the gap position with the largest difference between the inner and outer rims on the surface, then keep the inner and outer rims in the same line and roll along the zero position in contact with the surface, and check the position where the inner rim starts to contact the paint. The wet film thickness can be indicated by the scale reading marked on the outer rim by the roller thickness gauge. \xd\\xd\ Generally speaking, the operation is troublesome, but the accuracy is higher. \xd\\xd\ The last one is an electronic product ultrasonic thickness gauge with direct numerical display. It is said that it costs 3W, but it doesn't need to be so expensive. It is available in Nanbeichao Mall. \xd\ When the ultrasonic thickness gauge measures, the coating thickness can be displayed by detecting the coating with the probe, and the average value, standard deviation, minimum/maximum thickness and reading times can be continuously displayed/updated. \xd\ Generally speaking, the operation is simple, there are intuitive data, and data can be stored, and the price is more expensive than that received above. \xd\\xd\ The above products can be found in Nanbeichao Mall.