Hign-concerned Chemical:NoneModel Number:Car Tyre Tire Tread Depth Gauge MeterBrand Name:SAKOYDAOrigin:Mainland ChinaProduct range:0-25.4mmDifference:0.1mmMaterial:ABS plasticNet product amount:about 40gProduct accuracy:0.01mmInstructions for use: Step 1: Press the power button to turn on the machine and check whether the display is normal. Step 2: The allowance for the measurement surface is on a flat surface, push the measuring rod to the end, press Zero to return to "0.00" Step 3: The measurement surface is vertically close to the tire surface. Insert the measurement rod into the bottom of the groove to display the measurement value. Product information: Product range: 0-25.4mm Difference:0.1mm Material: ABS plastic Net product amount: about 40g Product accuracy: 0.01mm Note: It is recommended to measure several times in different areas of the same tire and take the average value, the result is more accurate.