Features: Automatically identify the substrate-and display it on the-LCD, high-definition backlight-display, large screen. Composite coating thickness gauge, driven-by two batteries, energy saving and environmental-protection. Wider-measuring range: 0-2000um. With automatic zero-point calibration and multi-point calibration functions to prevent mis-calibration, simple keystrokes, easy operation, one-handed operation, easy to understand testing. Thickness gauges are used to measure the thickness of metal coatings and coatings, such as paint/enamel/chromium on-steel, paint and anodized coatings on aluminum/coppers. Automatically detect the-properties of the-substrate. This instrument is used for nondestructive measurement of the thickness of coatings and paints. It is an-essential equipment for material surface-treatments, widely used in manufacturing, metal processing, chemical-industry, commodity inspection and other-fields, and can also work stably in laboratories, workshops and outdoor. Specifications: Material:ABS Size:Approx.9.5x4x2.2cm/3.74x1.57x0.86inch Color:Black/White/Red Measurement accuracy: (3%+1um) Power supply: 2 1.5V AAAbatteries (shipped without batteries) Service temperature: -10 degreesCelsius and 50degreesCelsius Package Includes: 1 Set Thickness Gauge note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.