Powder Coating Thickness Gauges

Features:
Non-magnetic coating thickness measurement and non-magnetic objects on a non-conductive coating on magnetic metal substrates
Measuring range: 0-1000um / 0-40mil (standard range)
Minimal surface: F: Convex 1.5mm / concave 25mm N: Convex 3mm / concave 50mm
Resolution: 0.1 / 1
Minimum measuring area: 6mm
Thinnest base: 0.3mm
Automatic shutdown
Environment: Temperature: 0-40 ℃ Humidity: 10-90% RH
Accuracy: ± (1 ~ 3% n) or ± 2um
Power supply: 4 AA batteries
Battery voltage indication: low-voltage Tips
Dimensions: 161X69X32mm
Weight: 210g (without batteries)
http://www.colopowdercoatingline.com/