Two measurement , magnetic induction for magnetic substrates such as iron and steel; eddy current for substrates such as brass, aluminum, zinc etc.; Highly sensitive probe, automatically identify the substrates Three measurement modes, single measurement, continuous measurement, fast continuous measurement; IPS High-definition large color screen with clear and easy reading, more settings of brightness, color, screen rotation; Built-in lithium battery, USB direct charging, eco-friendly and durable;<br><br>Multiple calibration modes (automatic probe calibration, manual zero calibration, manual multiple points calibration), better decreasing the measurement errors and secure the accurate measurement; 2S fast switch on, 50 data can be stored; high and low alarm value can be set; Measuring principle: Electromagnetic induction/eddy current effective diameter Test range: 0-2000UM Error: soil (2.5%+2UM) Display accuracy: 0.1pM (0-99.9pM) 1pM ( 100uM) Unit: UM,MM,MILS Minimum convex curvature radius: 5MM Minimum concave curvature radius: 25MM Minimum measuring area diameter: 20MM Minimum substrate thickness: 0.2MM/0.05MM Calibration: infinite point calibration, zero point calibration, multi-point calibration. Battery: 37V/750MAH polymer physical battery Charging voltage and current: 5V/500MA USB interface: MICRO-B Operating environment: Temperature: 0~50C (32~122F); Humidity: 20%~90%RH; No strong magnetic field, no strong electromagnetic interference Storage environment: Temperature: -10~60C (-14~140F) Tips: The product may be updated constantly, The Actual Product May Have Slight Differences Or Color Differences the color and appearance may be changed, please don't mind. And take a consideration before place the order if you have request forcolor or appearance Colour:Black Material:plastic<br><br>Package Contents: 1 x Paint Thickness Gauge<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.