Features:Very precise: this gauge is accurate enough to create readings within 0.1mm and resolution is within 0.01mm.Large digital LCD screen, make reading clear, easy and reliable.Using light-weight carbon fiber material, very durable.Suitable for tread depth, brake shoe and pad wear, also can be used to measure jewelry.Switchable metric and inch system, convenient to use.An essential equipment for safe driving.Specification:Material: Carbon FiberWeight: Approx.52g/ 1.8ozSize: Approx.11.5 * 6.5 * 2cm/ 4.5 * 2.6 * 0.8inColor: Shown as pictureBattery:1 * 3V CR2032 Button Battery (Not Included)Package List:1 * Tread Depth GaugeNote:Please allow slight error due to manual measurement. Thanks for your understanding..