Features Large LCD display Zero setting at any position Metric / Inch Display on / off switch manually Suitable for wear tread depth, brake shoe and pad Digital depth gauge caliper tread depth gauge LCD Tyre tread gauge Specifications: Area: 0-25.4mm / 0-1 Display resolution: 0.01 mm / 0.0005 Oper : 0-40C Battery: SR44 / LR44, 1.5V Size: about 11 x 6 x 1.2 cm Battery: SR44 / LR44, 1.5 V No included ) How to use: (1) - (6) please see the picture. Install the battery in (2), + side up Switch ON (4) Put (5) on a flat object and press bar (1) downward put up ZERO (3) Put doctrine on tires, keep them stable and push bar top (6) in the tread Read tread depth value directly Off (4) or more Important: Hold the meter clear No water oil on Bar (1) Remove the battery when not used for a longer time The indicator flashes when the battery is low Display unintentional mistakes: removed the battery for 30 seconds Package Included: 1x Digital Depth Gauge Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowederror is +/- 1-3 cm. About