1. The thickness gauge is a precision measuring tool and should be protected from impact or dropping during use to maintain accuracy. 2. Keep the device clean and prevent water or other liquids from entering the thickness gauge to ensure proper operation. 3. Do not apply voltage to any part of the thickness gauge, and avoid using sharp objects to press on the display to prevent damage to the electronic circuit. 4. Remove the battery when the device is not in use for an extended period. Name: MINI Digital Thickness Gauge Specification: 0-20mm / 1 inch Accuracy: 0.01mm / 0.0005 inch Storage and Transportation Temperature: -20°C to 70°C Relative Humidity: ≤80% Style: Flat Head Color: Gray Material: Plastic Package Contents: 1 x Thickness Gauge Note: The package includes only the items listed above; other products are not included. Note: Lighting reflections and differences in display screens may cause slight variations in the color of the item as shown in images. Measurement error allowance: ±1-3 cm.