GM100 LED metal tester - Accurate measurement you can rely on Automatic calibration point corrects errors for precise, repeatable results. Linear automatic compensation reduces non-linear probe errors, delivering higher accuracy for every measurement. - Practical data management Built-in data storage with easy data query and data erase functions. A battery level indicator helps you monitor power so you can avoid unexpected shutdowns during important measurements. - User-friendly design Automatic shut-off saves battery life, and the LCD backlight ensures clear readability in low light. The device is compact and lightweight at only 210 grams for easy transport and handling. - Wide measuring range with clear specs Measuring range: 2 to 220 mm (steel). Sound speed range: 1000 to 9999 m/s. Resolution: 0.1 mm. These capabilities support accurate thickness checks and material assessments across a range of metal applications. - Practical use scenarios 1) In production lines, verify metal sheet or plate thickness to ensure parts meet specification during stamping or fabrication. 2) In field maintenance, inspect wall thickness of pipes or tanks to assess corrosion or thinning over time. 3) In quality control labs, perform quick thickness and material property checks on metallic samples with reliable data stored for traceability.