Digital Depth Gauge

• EASY TO OPERATE: You can zero the meter in any position for easy adjustment and accurate readings. Manual power on/off button that automatically turns off after 6 minutes of inactivity to save battery life.
• USAGE: Measurement 1: The measuring surface is pressed firmly against a flat surface, push the measuring rod to the bottom, press the zero button, and 0.00 is displayed. Measurement 2: The measuring surface is vertically close to the tread of the car tire, insert the measuring rod into the bottom of the tread groove, and the measurement value can be displayed.
• Item Dimensions 4.53 x 2.56 x 0.79 inch