... 4.OEM is welcome. Normal Air Pressure GaugeCommon Pressure Gauges used in Air Compressors,Hollow Pumps,Air-Pressure Piping,Pressure Regulating Values,Testing Equipment,Medical ... / 4" (100mm) / 6" (150mm)3. Pressure Range: vacuum, compound, 0 - 15psi - 10,000psi (customer-made pressure range)4. Connection: Bottom (Vertical), Center ... %,1.6%, 1% 8. Window: glass, polycarbonate Normal Air Pressure Gauge