The most useful and simple inclination metering available. The R.L.M. Softwares Plumb Bob application simulates a real plumb bob hanging from the center of the iPhone screen. No calibration needed, it always point to the center of the earth!!!.
So, with his single bubble lever interface, you can easily and precisely lever objects in any position. You can align Pictures in the wall, lever tables, stands, bars, columns, etc...