Features: 1. Easy to use. Zero adjustment at any position, support switching between inches and millimeters. 2. This tread depth gauge can help prevent punctures/punctures by knowing the tread on your tires and reducing fuel consumption. Product Description: 1. 100% Brand New High Quality 2. Type: Tire Depth Gauge 3. Material: ABS 4. Dimensions: 88 x 35 mm 5. Battery: 1 x SR44/LR44 coin cell battery (not included). Functions: 1. Measuring range: 0-1 inches (0-25mm) 2. Suitable for tread depth, brake shoes and pads Wear How to use: Step 1: Press the power button to turn it on and check if the display is normal. Step 2: Assign the measurement plane to the plane, push the measurement rod to the bottom, and press the reset button to return to "0.00". Step 3: The measurement surface is vertically close to the tire surface. Insert the measuring rod into the bottom of the groove to display the measured value. Note: It is recommended to average multiple measurements on different areas of the same tire for more accurate results