Johnson Bubble Level | Digital Spirt Level
http://www.johnsonlevel.com Johnson Bubble Level is a digital bubble level for the Android phone. Green glo-view level that works in three level orientations: flat phone (surface level), horizontal level and vertical level. Calibration included. Accuracy displayed to tenths (0.0 degrees). Use it to straighten shelves, adjust hanging pictures, or cheat on your golf putts. Works with all Google Android operating systems.
