2-1/16in. BOOST/VACUUM; 5-100 PSI; ULTRA-LITE DIGITALIncredibly high accuracy in both vacuum and boost, AutoMeter's Digital Boost/Vac gauge is engineered to provide the best possible accuracy in applications ranging from 30 in/Hg to 30 psi. Our patented gauge technology allows the gauge to calibrate on every startup to compensate for altitude, barometric pressure and other atmospheric conditions, assuring you of the most precise reading possible. A direct plug in wiring harness is included for ease of installation. A high pressure digital boost only gauge is also available for diesel or high boost gasoline applications. E-Z View Digital LED Display Incl. Mounting Hardware/Instructions Digital Stepper Motor Provides Unmatched Accuracy 12 And 16V Compatible Incl. Data Acquisition Solid-State MAP Sensor Incl. MAP Sensor T-Fitting Nylon Tubing Vacuum Fittings Incl. Wiring Harness