This digital angle finder level measures all angles, whether you need to measure in the 360° range or 90° quadrants. It can display both degree and slope and has 4 strong built-in magnets. The display is in an upright position, which is best especially when working overhead. Not only does this instrument measure horizontal and vertical surfaces, but it can also measure the angles of all slopes’ rise and fall. Features: 0.1 ° Precision With 4 Built-in Strong Magnets Flip-up LCD with upright display Measuring range of 0 ~ 360 ° Hold function to freeze measurements Absolute measurement and relative measurement conversion Auto power-off Measures precise inclines in degree or mm/m (up to 100mm/m)