1.Resolution; 0.1/1 2.Accuracy: 1-3%n or2.5um 3.Min. measuring area: 6mm 4.Min. sample thickness: 0.3mm This tester is used for measuring thickness and corrosion of pressure vessels, chemical equipment, boilers, oil storage tanks, etc. in industries of petroleum, shipbuilding, power station, and machine manufacturing.Specification:In built probe (s)Operating principle: magnetic induction/eddy ...