The body of this depth gauge is made of aluminum alloy, which is lightweight and easy to carry. 0-80mm digital display depth gauge, with height and depth two measurement modes, you can switch according to your use needs. It has 3 unit modes, including metric, imperial, and fractional, which can be converted with one click, very convenient. The bottom of the depth gauge comes with a powerful magnetic with a diameter of 10mm, which can be adsorbed on iron objects for measurement, making the measurement more stable and accurate. Features: Premium Material: The body of this depth gauge is made of aluminum alloy, which is lightweight and easy to carry. High hardness, not easy to deform, high corrosion resistance, not easy to rust, can provide long service lifespan. LCD Display: The depth gauge adopts a large LCD digital display, the data display is clearer and can be read quickly, which is very convenient. Two Measurement Modes: 0-80mm digital display depth gauge, with height and depth two measurement modes, you can switch according to your use needs. Magnetic Measurinng Base: The bottom of the depth gauge comes with a powerful magnetic with a diameter of 10mm, which can be adsorbed on iron objects for measurement, making the measurement more stable and accurate. Units Convertible: It has 3 unit modes, including metric, imperial, and fractional, which can be converted with one click, very convenient. Easy To Use: It also comes with a locking screw, clockwise locking, with data hold function, which is convenient for you to record. Energy Saving & Power Saving: This depth gauge is powered by 1pcs CR2032 button battery with auto power off function. Specifications: Name: Woodworking Depth Ruler Material: aluminum alloy Battery: 1 * CR2032 button battery (included) Item size: 140 * 111 * 21mm / 5.51 * 4.37 * 0.83in Item weight: 79g / 2.79ounce Package size: 170 * 190 * 30mm / 6.69 * 7.48 * 1.18in Package weight: 136g / 4.80ounce Packing List: 1 * Woodworking Depth Ruler