SNDWA Digital Auto Coating Thickness Gauge Refinishing Car Paint Meter Film Thickness Tester Width Measuring Instrument SW-6310A SNDWAY AUTO CAR PAINT COATING THICKNESS GAUGE SW-6310A The meter can accurately measure the non-magnetic coating thickness on magnetic substrate surface(like, the coating of painting, rubber and enamel, etc. ), and the nonconducting coating thickness on non-magnetic metal substrate surface(like, the coating of painting, rubber, etc. ). suitable for all kinds of major industrial workshops, labs and outside environment