Coating thickness gauge is a reliable and high-quality device for accurate measurement of the thickness coating on all types of metal surface. High accuracy of measurements, reliable and easy to maintain, simple in use. This smart tool can be used in the manufacturing, metal processing industry, commodity inspections, car inspections, and testing fields in a laboratory, etc. Features: The thickness gauges are able to accurately distinguish the properties of substrates by the magnetic and eddy current properties of the metal substrate. The gauges use high precision probes to accurately measure the thickness of non-magnetic coverings on the surface of magnetic substrates (e.g. paint, rubber, enamel etc.) and non-conductive coverings on the surface of non-magnetic metal substrates (e.g. paint, rubber etc.). Measures accurately on smooth, rough, thin and curved surfaces, measurement directly shows cladding thickness and substrate material in mils/um, built-in 850mAh Li-ion battery. Large display with backlight and high definition data display. It shows metal type, working mode, battery status and readings either in m or mils units. This thickness gauge is used frequently in used car paint, powder coating, anodized aluminum, bathroom accessories, bicycle racks, stadium seats, outdoor sheds, furniture, swing sets, cabinets, and storage cabinets, as well as other household or industrial areas. Specifications: Material: ABS Measuring Range: Magnetic 0~1200m; Non-magnetic 0~1200m Resolution: 0.1m @ (0~99.9m); 1m @ (100~1700m) Sensitivity Error: (2+2%*H)m @ (0~500m); (2.5%*H)m @ (500~1700m) Minimum Measurement Area: Magnetic 25x25mm; Non-magnetic 25x25mm Minimum Curvature: Convex 5 mm; Concave 30 mm Minimum Substrate Thickness: Magnetic 0.2mm; Non-magnetic 0.05mm Display: Reverse display segment code screen Battery Type: 3.7V, 850mAh lithium battery Charging Specification: DC 5V/0.8A, Type-C interface Operating Temperature & Humidity: 0C~50C, 10%~80%RH Storage Temperature & Humidity: -10C~60C, 10%~70%RH Item Size: 10.4 * 6.3 * 2.8cm / 4.09 * 2.48 * 1.10in Item Weight: 94g / 3.32oz Package Weight: 325g / 11.46oz Package Size: 20.7 * 10.5 * 5.4cm / 8.15 * 4.13 * 2.13in Package List: 1 * Coating Thickness Gauge 1 * Cloth Bag 1 * Type-C Cable 1 * Iron Substrate 1 * Aluminum Substrate 5 * Calibration Sheet 1 * User Manual (English)