Amazon.com: Merrill PGNL100 manómetro : Industrial y Científico
Amazon.com: Refrigerant Pressure Gauge, Car Air Conditioning Refrigerant High/Low Pressure Gauge Manifold Diagnostic Manometers Repairing Tool Set : Automotive
R134a Digital Manifold Gauge Set HVAC for Testing Maintaining Air-Conditioner, Vacuum Pressure Temperature Leakage A/C Refrigeration Tester with Built-in 90 Refrigerants : Automotive - Amazon.com
Digital Low Pressure Gauge with 1/4'' NPT Bottom Connector and Rubber Protector by Uharbour, -15 — 15 psi, Accuracy 1% .F.S.: Amazon.com: Industrial & Scientific