Precision levelling and angle measurement/alignment tasks essentially involve surface planes that demand for 2-dimensional solution rather than the outdated single-axis 'bubble' vial method that indicates 'bubble' leveling status "one axis at a time"
Digi-Pas 2-axis precision digital level simultaneous displays of two-dimensional plane angles, effectively simplifying and resolve the hurdles of taking angles "one axis at a time" iteration (tedious & time consuming task of trial-and-error) experienced when using those outdated single-axis 'bubble' or traditional digital levels to conduct surface plane levelling, tilt angle measurement, surface flatness profiling and precision 2D alignment tasks.