Features: Very precise: This gauge is accurate enough to create readings within 0.1mm with a resolution of 0.01mm. Large digital LCD screen provides clear, easy, and reliable readings. Constructed with lightweight carbon fiber material for durability. Suitable for measuring tread depth, brake shoe and pad wear, and can also be used for jewelry measurement. Switchable between metric and inch units for added convenience. An essential tool for safe driving. Specification: Material: Carbon Fiber Weight: Approx. 52g / 1.8oz Size: Approx. 11.5 x 6.5 x 2cm / 4.5 x 2.6 x 0.8in Color: As shown in picture Battery: 1 x 3V CR2032 Button Battery (Not Included) Package List: 1 x Tread Depth Gauge Note: Please allow slight variation due to manual measurement.