Normal Air Pressure Gauge 1.CE ISO:9001:2008 ... welcome. Normal Air Pressure GaugeCommon Pressure Gauges used in Air Compressors,Hollow Pumps,Air-Pressure Piping,Pressure Regulating Values,Testing Equipment,Medical Sterilizers ... ) / 3" (80mm) / 4" (100mm) / 6" (150mm)3. Pressure Range: vacuum, compound, 0 - 15psi - 10,000psi (customer-made ... 1% 8. Window: glass, polycarbonate Normal Air Pressure Gauge