The AR932 Coating Thickness Gauge uses a dual function measurement method, which can automatically identify magnetic and non-magnetic substrate, and then use the appropriate test method. It can measure the thickness of the non-magnetic coating(such as aluminum, copper, enamel, rubber, paint, etc) or magnetic metal substrates(such as steel, iron, alloy and hard magnetic steel), and the non-conductive coating thickness on a non-magnetic metal substrate. Features: 1. More wide measuring range: 0-1700um 2. Both with zero point calibration and multi-point calibration 3. Automatically identify substrate material and display on the LCD 4. Large screen, and with max 20 groups of stororage data 5. Statistics display: Max, Min, Avg 6. Simple button layout, easy to operate, one-hand operation 7. Convenient automatic calibration function to prevent misoperation calibration 8. Dynamically adapt to environmental features 9. V shaped groove suitable for measurements on cylindrical parts 10. Special probe structure comes with better stability 11. "Beep" sound when measurement or calibration is completed 12. 180 degree flip, easy to read data with top surface Specification: Brand SMART SENSOR Model AR932 Measurement range 0~1700um, 0~67.8 mils Accuracy ±(2um+3%H), H-standard coating thickness Resolution 0.1μm / 1μm Measuring Principle Magnetic Induction & Eddy current Probe built-in probe Power supply 2 x 1.5V AAA battery (NOT included) Body size 50*30*119mm / 2*1.2*4.7in Weight 432g Storage temperature 10~60C Operating Condition 0℃~50℃(without strong magnetic) Data Storage 20 groups Backlight Display / Battery Indication / Data Analysis Yes Zero / Two Poin / Basic correction /Alarm Buzzer Yes Single / Continuous / Standard Deviation Measurement Yes Max, Min, AVG & DFR Measuring Yes Data Storage & Recall, Metric / Inch Switchable Yes Package List: 1 * Coating Thickness Gauge 1 * User Manual 1 * Iron Base Substrate 1 * Aluminum Base Substrate