4. The Coating thickness gauge can be used for measuring the non-magnetic coating (paint, ceramic, rubber, plastic film, copper, etc.) of the magnetic substrate and the non-conductive coating (paint, oxide film etc.) of the non-magnetic metal substrate . Mostly used on used cars for best car condition. 2. Resolution: 0.1um/0.001mils Min, 1um/0.01mil Max; Measuring range: 0-2200um (0-86.61mils); Accuracy: ± (2.5%+2um/0.08mil), Measuring units: um, mm and 1. Accurate and reliable coating thickness measurement gauge with a color LCD for enhanced visibility. Built-in battery and automatic shutdown. Automatic recognition for iron (ferrous) and aluminum (non-ferrous) substrates. 3. Storage function allows you to store and review your measurements later, ensuring convenience and efficiency. The sensor helps you read more conveniently, the continuous measurement function enables you to take multiple readings without interruptions. 5. Portable and reliable, easy to use and recharge with USB-C, can be calibrated with few steps., Manufacturer: Akfldms