The MD SMARTTOOL digital level 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.Product Description: Fuel Pressure Gauge, Mini, 0-100 psi, Mechanical, Analog, Liquid Filled, 1-1/2 in Diameter, White FacePit Stop USA offers QuickCar MD SmartTool 8" Digital Level 56-163 at low everyday prices. Be sure to check out all our products from QuickCar Racing Products including Levels & Angle Finders;Levels & Protractors.