High-precision measurement: the measurement range is 0-30 mm. Flexible and compact: Metric can be switched between inches and mm, easy to use. Not only easy to carry, but also easy to hang. Good workmanship: materials and workmanship make it good quality and beautiful in appearance Usage: Digital tire tread gauge perpendicular to the tire tread close, the bottom of the measuring stick extended to the tread grooves and degree. In order to make the product more accurate measurements, it is recommended to measure several times. Accuracy: 0.1mm Power : SR44 / LR44 1.5V battery [not included) Working temperature: 0 - 40 Material: ABS plastic Package: 1 x Digital depth gauge Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.