This purchase description outlines the minimum requirements for a Vacuum Gauge Standard (VGS) for the Air Force. The VGS, replacing an existing Televac system, will serve as a base reference standard for calibrations in Air Force Precision Measurement Equipment Laboratories (PMELs). Key performance requirements include an operational range of 1 X 10-6 to 1 X 10-3 Torr with specified pressure uncertainties, a 4-digit resolution, and operation within 65°F to 80°F and 80% humidity. It must have a warm-up time of no more than 30 minutes and maintain uncertainty for at least 12 months. Functional requirements specify a digital display with front panel controls, multiple pressure units (Torr, Pa, mbar, user-defined), adjustable stability limits, and operation with dry nitrogen and air. Communication will be via RS232, and the system must include overpressure protection. Mechanical requirements stipulate a display weight not exceeding 10 lbs, dimensions no larger than 15”x 10”x 5”, a rugged shipping case, and a 0.75-inch straight pipe port for vacuum connection. The VGS requires ~120 VAC power, shall use only one outlet, and include necessary power cords and electrical protection. Firmware must display its version on startup and be warranted against defects, with the contractor responsible for updates. An operator’s manual, a comprehensive deliverable component list, and hazard mitigation information are also required. A minimum one-year warranty and technical support are mandatory, and the VGS will undergo testing to ensure all requirements are met.