[feature] Backlight - Large, clear LCD with backlight Absolute and relative measurement modes - You can measure relative angles by placing the meter on a reference surface zero and it will then give the result of the measured tilt angle. Through absolute angle measurement, it is possible to test whether the working surface is level. Always Upright Reading - Even if the protractor is inverted, the reading is always upright [product information] Product name: electronic digital display level ruler Color: Refer to pictures Material: aluminum alloy Size: 416mm Packing list (obtainable after purchasing a product): electronic digital levelx1 beg to be excused: 1. Due to the long shipping time, the item may be damaged during the transportation, if the item is damaged, please leave us a message through the official website immediately before leaving a comment, and I will solve the problem for you. 2. Due to manual measurement, the size may have an error of 1-3cm. 3. Color may vary by monitor.