Tire Pressure Gauges used in Air Compressors ... 4.Deliver 7days Tire Pressure Gauges used in Air Compressors,Hollow Pumps,Air-Pressure Piping,Pressure Regulating Values,Testing ... ) / 3" (80mm) / 4" (100mm) / 6" (150mm)3. Pressure Range: vacuum, compound, 0 - 15psi - 10,000psi (customer-made ... pressure range)4. Connection: Bottom (Vertical), Center Back ( ...