This is a digital angle sensor with a resolution of 0.1
When first switched on the level box automatically displays the angle of the surface on which it is sitting, relative to absolute zero. Pressing the zero button re-calibrates the level box to reference this surface. Using this function, you can compare the angle of one surface relative to another. For example, you can check the angle of a saw’s table to that of the blade.
Magnets, hidden in the base, hold the level box firmly in position on any steel or ferrous surface. The level box allows you to set up tools efficiently and effectively.
Odd angles that would have required several test cuts and even straightforward 45