Ensure that chassis tubing is level and plumb when building roll cages or checking driveshaft angles. A “hold” button freezes and unfreezes readings which can be displayed as degrees, percentages, or in./ft. at the push of a button. Plus and minus signs indicate when pitch is more or less than that shown on the display. Pitch reads in 1/8 in./ft. increments. Tool emits an audible “beep” at level and plumb. The tool shuts off automatically if idle for more than six minutes. Powered by a standard 9 volt battery.