Laser Scale Pad Leveler If you don't level you scale pads your "accurate setup" goes out the window! This easy-to-use system helps you level each pad, then helps you bring all 4 at the same height - to closer than .050". First use the level vial to accurately level all 4 scale pads. Next turn the laser on, put it on top of 1 pad (this is your baseline pad) and point it at another one. Put the measuring tab on this pad and slide it sideways until one of the white dots shows brightest in the laser beam. That dot is marked how much higher or lower it is than the baseline pad. Raise or lower that pad until the dot at Level shows brightest.