Fuel Flow Restriction Vacuum Gauge - Scale Shows -30 to 0 mm Hg, Bottom Mount

• Stainless steel case and face increased from 2.0 inches to 2.5 inches diameter for easier reading
• The improved case features a pressure relief valve to adjust to ambient barometric pressure changes
• Gauges with acrylic lenses upgraded to polycarbonate
• Needle stops replaced with internal locking mechanism to prevent damage due to an accidental overpressure
• Internal sealing at the fitting, lens, and pressure relief valve reduces the likelihood of internal contamination by splashing fluids