The SMARTTOOL has dozens of uses around the race or street rod shop. It can be used to ensure that chassis tubing is level and plumb, and comes in helpful when building roll cages or checking driveshaft angles. Features of the SMARTTOOL include a "hold" button which allows "freezing" and "unfreezing" readings which can be displayed as degrees, percentages (slope), or in. /ft. (pitch) at the push of a button. Plus and minus signs indicate when the pitch is slightly more or less than the pitch shown on the display. Pitch readings are in 1/8 in. /ft. increments. a listen and level audio feature emits an audible "beep" at level and plumb. An on/off switch will shut the tool off automatically if it's left idle for more than 6 minutes. Powered by a standard 9 volt battery.Pit Stop USA offers MD SmartTool 8" Smart Level ALL10113 at low everyday prices. Be sure to check out all of our products from MD Building Products including MD Building Products Angle Finders and Levels and Allstar Performance Levels and Angle Finders and Allstar Performance Levels and Protractors.