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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 Description: Area: 0-25.4mm / 0-1 " Display resolution: 0.01 mm / 0.0005 " Oper : 0-40°C Battery: SR44 / LR44, 1.5V Size: about 11 x 6 x 1.2 cm 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 Note： 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 allowed error is +/- 1-3 cm. Package included: 1PC X Tire pressure gauge