All American Nickel 2 5/8" Full sweep Boost/Vacuum gauge, with standard stainless steel low step bezel and curved glass lens. Features include: - Rugged air core movement combined with microprocessor technology for precision and durability - Full sweep provides increased accuracy - Easy to read 2 5/8" size  - Push-button calibration - Integrated red warning light, illuminates entire gauge red when activated - Warning light output for additional warning indicator lights - Analog .5 – 4.5VDC output for data logging systems - LED lighting, choose between Warm White or Cool White - Pressure transducer included - Installation hardware and wiring harness included