Used for inspection and acceptance in industries such as automotive manufacturing and repair, hardware and home appliance manufacturing, steel structure and construction, aerospace and rail transit, electronics and 3C industry, quality inspection and third-party testing institutions, shipbuilding and marine engineering, etc. 1. Wide viewing angle LCD, one key switch display flip, easy to read. 2. Iron-based/aluminum-based automatic identification conversion. 3. High precision, high sensitivity non-destructive paint film probe. 4. Adapt to automotive, iron, steel, aluminum, copper and other varieties of paint film thickness detection.