Electrical levelling instrument is a portable tool which can measure the tilt angle quickly and accurately. Features: With 4 x 90 measuring range and 0.2 high accuracy, the digital protractor is designed for measure the tilt angle quickly and accurately. Relative/ absolute measurements interchange at any position. Angle and slope readout conversion, with data hold function. Digital LCD display for easy reading and use, clear and intuitive. The display will auto off after 30s idle time, the device will auto off after 3min idle time. Built-in magnet ensures the digital protractor and measured object are close fitting. Mini size, lightweight and portable. IP54 waterproof and dustproof. Widely used in wood processing industry (especially in furniture manufacturing) for the accurate cutting of wood angle, auto repair industry for the accurate control of tire angle, machining industry for the accurate position of tool working angles as well as the rotation angle of large vehicle arms. Note: Size and color may be slightly different due to manual measurement and different light conditions. Thanks for understanding. Specifications: Color: Yellow + Grey Material: Plastic Screen: LCD Display Measuring Range: 4 x 90 Resolution: 0.05 Accuracy: 0.2 Repeatability: 0.1 Power Supply: 2 * AAA Battery (Not Included) Working Temperature: -10~50 Waterproof Level: IP54 Item Size: 5.8 * 5.8 * 2.5cm / 2.28 * 2.28 * 0.98in Item Weight: 70g / 2.47oz Package Size: 10 * 6 * 3cm / 3.94 * 2.36 * 1.18in Package Weight: 100g / 3.53oz Package List: 1 * Inclinometer 1 * Screwdriver