Coating Thickness Gage, Maximum Thickness Measured 250 mil, Minimum Thickness Measured 0 mil, Thickness Measurement Accuracy +/-(0.5 mils + 3 Percent) greater than 100, Calibration Certificate Type NIST, Testing Method Magnetic, Compatible Material Ferrous Metal, Includes Belt Clip, Certified Conductivity Standard, FTS Probe, Gage Protective Rubber Holster, Protective Lens Shield, Standard Body, USB Cable, Wrist Strap, Manufacturer Warranty Length 2 yr, Batteries Included Yes, Battery Size AAA