Gain Express Coating Thickness Gauge Meter With Built-in F and NF probe Paint Iron 0-1250um / 0-50mil Range (CM-8825FN) 0-1250um / 0~50mil Measuring Range with Built-in F probe & NF probe Magnetic Induction and Eddy Current (F & NF) Operating Principle, manual and automatic shut down With automatic substrate recognition. Provides Single & Continuous measurement mode with Metric/English conversion Suitable for the laboratory, Powder Coating Companies,Manufacturing Companies, Paint Suppliers,Manufacturing Companies, Steel and Aluminum Refinishing, Automobile Dealers, Auto Auctions,Body Shops, Auto Detailers and any company needing a highly accurate measurement of the dry coating thickness and can be used even in harsh field conditions Has CE marking, Conforms and passed the standards of international standards including ASTM, DIN, BSandISO-2178 aswell as ISO-2360