INNOVA 3620 Vacuum/Carburetor Fuel Pressure Tester Helps to identify and diagnose system vacuum leaks and problems in the engine, and the various vacuum-operated motors and accessories Accurately checks system fuel pressure on vehicles that are equipped with carburetors Includes 24-inch oil resistant rubber hose with a universal fitting adapter, tapered adapter and Tee connector Large, easy-to-read 3 1/2-inch dial with dual-calibrated and color-coded scales Heavy-duty Bourdon tube meter movement