slbrillreHigh precision: The digital level with 4 90 (0360) measuring range supports an accuracy of 0.1 at 0 and 90; 0.2 at other angles. Displays angle and bevel readings in / % / mm / m / IN / FT. With the Hold Reading function, it is convenient to record with this digital level inclinometer box, ideal for automotive, wood and mechanical industries, machinery, medical fields, etc. LED Display with Sound Alarm: Featuring LED technology for brighter display, this protractor is easier and clearer to read the values even at night. The display value will automatically reverse when the electronic level is upside down. What's more, the acoustic signal routing via beeps when you reach 0 or 90 (+/-1) Absolute and Relative MeasurementThis angle finder supports absolute angle measurement to test whether the working surface is level for checking roof slopes, wheel alignment, etc. In addition, this protractor allows you to check relative angles between surfaces. Magnetic V-groove BaseThe V-groove base with powerful magnets allows for a firm attachment to a curve or cylindrical magnetic surfaces such as metal pipes or trees. Durable aluminum sturdy frame for precision leveling measurement IP54 Waterproof and DustproofThe inclinometer comes with IP54 protection, making it suitable for use in harsh environmental conditions. Battery cover and other highly waterproof designs ensure good operation in environment with splashing water and dust Size: Range 150 (mm) Color: Black Quantity: 1 piece Bubble level only, no others included slbrillre Product, thank you.