Fnirsi CTG-20 Car Paint Coating Thickness Gauge Tester Specification: 1. Measuring range: 0~1400um 2. Accuracy: +-3%+2um 3. Resolution ratio: 0.1um 4. Calibration: Zero-point calibration, multi-point calibration 5. Unit: um, mil 6. Minimum convex curvature radius: 5mm 7. Minimum concave curvature radius: 25mm 8. Minimum measurement area diameter: 20mm 9. Humidity: 20%~90% RH 10. Battery: 600mAh Lithium battery 11. Data Storage: Support 12. Putty Powder Test: Support 13. Rotatable Screen: Support 14. Auto Power Off: Support 15. Size: 115 x 48 x 18mm Features: 1. A highly sensitive probe automatically identifies the substrate, taps to measure, and gets data in seconds 2. Triple use of Iron, Aluminum, and Zinc, with comprehensive detection 3. Two measurement modes, long press "Save" to lock and view the max, mini, ave, and real-time values, and short press "Save" to rotate the screen to meet your measurement needs 4. Breakthrough innovation, supporting the identification of iron powder putty and prompting, no longer being deceived, and more reassuring for vehicle inspection 5. Double unit quick switching, the ummil unit can be freely switched to make the measurement data clearer 6. Quick zero calibration, is faster, more accurate, and more reassuring, short press the "ZERO" button to perform zero calibration 7. Automatically detect substrate and detect coating thickness through electromagnetic induction and eddy current effects 8. Exquisite and compact one-handed grip, 115mm compact body, lightweight and portable, easy to carry when going out with a pocket 9. Equipped with a 600mAh rechargeable lithium battery, it can be used for 8 hours on one charge without needing repeated battery replacement, making it environmentally friendly and hassle-free 10. Automatic shutdown without operation, automatic shutdown can be set, with no operation for 5 minutes to automatically shut down and extend battery life