The Coating Thickness Gauge is used to measure the Coating on parts. It can Measure Coating Upto 1250 Micron on Regular Probe and the Range of Instrument can be Increase by using high range of probe. This Instruments has 4 types of probes. 1.Magnetic Induction Probe is to Measure The Thickness of Non Magnetic Coating On Magnetic Substrate. 2. Eddy Current Probe is To Measure The Thickness of Non-Conductive Coating On Non-Magnetic Substrate 3. Magnetic Induction Probes for Bores & Grooves 4.Magnetic Induction Probe with 10mm Range. This Instrument of Insize is Very Easy To Use and Best Option In This Price Range. Kindly Send Your Inquiry on sales@acroenterprise.net For More Details. Happy Day.