Precise Angle Gauge with Scale The digital level with scale supports a measuring range of 490 (0-360), an accuracy of 0.1 0 and 90 0.2 at other angles. Displays angle and bevel readings in /% / mm / m / IN / FT. With the reading hold function, it is convenient to record by this digital level inclinometer bevel box. LED Display with Sound Buzzer Dot of LED technology for the most display Bright, this protractor angle gauge is easier and clearer to read values even at night. The display value is automatically reversed when the electronic level is upside down. In addition, routing of the acoustic signal via beeps when you have reached 0 or 90 +/- 1. Absolute and Relative Measurement This angle detector supports absolute angle measurement to test whether the work surface is level to check roof slopes, wheel alignment, etc. In addition, this protractor allows you to check the relative angles between surfaces. Magnetic V-Groove Base The V-groove base with strong magnets allows for solid attachment to curve or cylindrical magnetic surfaces such as than a pipe or metal shafts. And the sturdy and durable aluminum frame for precision leveling measurement. IP42 waterproof and dustproof The inclinometer is provided with IP65 protection, making it suitable for use in harsh environmental conditions . The battery cover and other high-seal construction designs ensure its proper operation in an environment with splashing water and dust.