Batteries not included Digital Thickness Gauge, 0-12mm Thickness Gauge Calipers with Digital Display, Width Measure Micrometer Measuring Tool for Paper, PU Leather, Sheet Metal, Jewelry Color Style and Size: Blue, 38 x 22 x 106mm. BASIC PRODUCT SETTINGS- The thickness calipers support all position reset functions, metric and inch system switches. (Measuring Range: 0-12mm/0.5", Resolution: 0.01mm, 0.0005", Accuracy: 0.1mm, 0.005inch) EXQUISITE DESIGN - The Multi-functional digital thickness gauge has a large digital LCD display, which can easily read the data. It is suitable for the measurement environment where insulation, anti-magnetic or anti-scratch is particularly required. HIGH-QUALITY MATERIALS- The main body of the thickness gauge is made of alloy gauges of high-strength aluminum which are not easy to break, lightweight, sturdy and durable. The grid capacitive measuring system can ensure quick response and easy to operate. WIDE RANGE OF APPLICATION- The thickness gauge has stable performance, high reliability, reliable measurement and a practical aspect. It can be used to measure the thickness of paper, PU leather, sheet metal, jewelry, batteries and magnetic materials. The thickness gauge has a large LCD display digital for easy reading. The main body is made of high quality, lightweight and durable engineering plastics. Similar in appearance and function to a micrometer, it is primarily used to measure the outside diameter and thickness of pipes or bars. Specification: Measurement range: 0 -12mm/0.5" Resolution: 0.01mm, 0.0005" Accuracy: 0.1mm, 0.005" Working temperature: 0~40 Storage temperature: -20~70 Relative humidity: 80% Power supply: LR44 button battery /SR44 1.5V (battery not included) Dimensions: 110 x 60 x 20 mm/4.33 x 2.36 x 0.78" Screen size : 33 x 10mm/1.3 x 0.39" Instructions: 1. Press the power key to turn on. 2. Check if 0.00 is displayed, if not, press the reset key to reset. 3. Pull the trigger to place the coin, then release the trigger Read the measurements, take a few additional measurements and average the results for a more accurate result.