2D-120 measures angles of the surface of bottom, floor, pillar, and etc.
Specially, our levels measure angles of X and Y axes at the same time.
You can choose your right resolutions of 0.01°, or 0.003°.
They have user friendly display with digital numbers and graph.
So anybody can easily notice the tilted direction and the angle degree.
Also they are easy to calibrate for anyone being able to do.