1. The thickness gauge is a precision measuring tool and should be protected from impact or dropping to maintain accuracy. 2. Keep the device clean and avoid exposure to water or other liquids to ensure proper functionality. 3. Do not apply voltage to any part of the thickness gauge, and avoid using sharp objects to press the screen to prevent damage to the electronic components. 4. Remove the battery when the device is not in use for extended periods. Name: MINI Digital Thickness Gauge Specification: 0-20mm / 1 inch Accuracy: 0.01mm / 0.0005 inch Storage and Operating Temperature: -20C to 70C Relative Humidity: Less than or equal to 80% Style: Pointed Head Color: Gray Material: Plastic Package Contents: 1 x Thickness Gauge Note: Light reflection and differences in display screens may cause slight variations in the color of the item as shown. Measurement error allowance is +/- 1-3 cm.