【Wide Applications】The angle finder/protractor enables quick and accurate measurements in woodworking, construction, engineering, telecommunications, automotive, etc. It is especially easy to measure the inclination of a helicopter, the inclination angle of a miter saw, automobile testing and repair, etc. 【4 Sides Magnetic】Powerful magnets built into the base secure attachment to any iron surface. 【Large EBTN (Enhanced Background Twisted Nematic) LCD Display greatly improves the reading experience, illuminated numbers and letters on a black background make reading very easy even in direct sunlight or low light conditions. 【Small and Lightweight】It is really easy to carry and use. 【Multiple Functions】The display automatically reverses when the head is lowered. Automatic shutdown after 3 minutes of inactivity；Clear function, prompt and low power consumption function