Coating Thickness Gauge

Leeb coating thickness gauges

The Working Principle for Ferrous Probe is Magnetic Induction and for Non-Ferrous Probe Eddy Current

Eddy-current testing (also commonly seen as eddy current testing and ECT) is one of many electromagnetic testing methods used in nondestructive testing (NDT) making use of electromagnetic induction to detect and characterize surface and sub-surface flaws in conductive materials.

Electromagnetic induction is used for non-magnetic coatings on ferrous substrates such as steel, whilst the eddy current principle is used for non-conductive coatings on non-ferrous metal substrates.