Feature: 1. [Intelligent Power Off] The digital thickness gauge has an on off key, and can choose to automatically power off, effectively protecting the tool. 2. [Measuring Range] The measuring range is between 0‑25.4mm, with a measurement system switch key, small in size and easy to carry. 3. [Accurate Measurement] The resolution is 0.01MM/0.001 inch, and it can be cleared at any position to facilitate micro difference measurement. 4. [Excellent Material] Made of high quality aluminum material, this electric thickness gauge is sturdy and durable, has a long service life. 5. [Wide Application] This electronic thickness gauge can be used to measure the thickness of paper, leather, cloth and thin metals, etc. Specification: Item Type: Thickness Meter Material: Aluminum Resolution: 0.01mm/0.001 Inch Range: 0-25.4mm/1 Inch Battery: 3V Button Battery (CR2032) (Shipped Without Battery) Working Temperature: 0-40 Degrees Celsius Storage and Transportation Temperature: -20-70 Degrees Celsius Relative Humidity: Less Than or Equal to 80% Package List: 1 x Thickness Meter How To Use Instructions: 1: Press the measuring button to separate the upper and lower measuring heads and wipe them clean. 2: Press the power button, turn on the power, and check whether the reality is normal. 3: When the upper and lower measuring heads are closed, check whether the reality is 0 when it is closed, if not, press the 0 setting key to clear. 4: Press the measurement button to make the upper measurement head have enough distance from the lower measurement head. Place the workpiece to be side on the lower measurement head and loosen the measurement button to make the upper measurement head press tightly on the workpiece, and then read the book. 5: When different standard display is required, press mm/in key to select. Battery cover installation method: Remove the battery cover, replace with a new battery (positive side facing up), and then install the battery cover.