Over 320 Degree Of Pointer Movement Adds Dial Scale And Resolution Providing The Most Accurate Reading,Features Metric And Imperial Scalings For Easily Relatable Readings w/o The Need For Mental Unit Conversions,Includes Mounting Hardware; Instructions For Installation,12 And 16 Volt Compatible; Compatible w/ Nearly Every Street Car Or Race Car Electrical System,Digital Stepper Motor Electric Instruments Provide Unmatched Accuracy,Unique Three-Dimensional Dial Design Gives Added Depth And Style To Your Custom Dash,Includes Data Acquisition Grade Solid-State MAP Sensor Providing Unmatched Accuracy And Durability,Modern White LED Through-The-Dial Lighting Provides Clear Visibility During Nighttime Use,Gauge Kit Includes MAP Sensor; T-Fitting; Nylon Tubing; Vacuum Fittings; Wiring Harness