Feature: 1. Versatile Measurement Capabilities: The CTG 20 coating thickness gauge excels in measuring both non magnetic coatings on ferrous substrates and coatings on non ferrous materials, making it suitable for diverse applications. 2. High Accuracy: Equipped with high accuracy non destructive probes, the CTG 20 effortlessly detects substrate properties and accurately measures coating thickness using electromagnetic induction and eddy current effects. 3. Quick Response: With just a 0.5 second measurement time, the probe makes single point measurements rapid and easy, while continuous measurements save time during extensive testing. 4. Quick 0 Calibration: Users can achieve immediate 0 calibration by simply pressing the 0 key, ensuring accurate readings and efficient setup for both ferrous and non ferrous substrates. 5. Long Lasting Battery Life: Featuring a built in 600mAh rechargeable li battery, the CTG 20 offers approximately 8 hours of continuous use, eliminating frequent battery replacements. 6. Compact and Portable Design: Measuring just 115x48x18mm, the CTG 20 is lightweight and easily portable, making it suitable for various industries like manufacturing, and automotive for on the way testing. Specification: Item Type: Coating Thickness Gauge Material: ABS Measurement Range: Approx. 0-1400μm / 0-55.12mil Accuracy: ±3%+2μm Resolution: 0.1μm Calibration: 0 Calibration, Multi point Calibration Unit: μm, mil Minimum Convex Curvature Radius: Approx. 5mm / 0.2in Minimum Concave Curvature Radius: Approx. 25mm / 0.98in Minimum Measurement Area Diameter: Approx. 20mm / 0.79in Working Environment: No strong magnetic field Operating Temperature: -10℃ to +50℃ Operating Humidity: 20% to 90% RH Battery: 1x600mAh Rechargeable Li Battery (Shipped with Built in Battery) Data Storage: Supported Putty Powder Test: Supported Rotatable Screen: Supported Auto Shutdown: Supported Size: Approx. 115 x 48 x 18mm / 4.53 x 1.89 x 0.71in . Package List: 1 x Coating Thickness Gauge 7 x Testing Accessories 1 x USB Cable 1 x Instruction Manual