fannay
Digital Manifold Gauge, HVAC Vacuum Pressure Temperature Leakage Tester for Air Conditioning System, Manifold Pressure Gauge for Testing Maintaining Refrigerator
DAUB
Digital Manifold Gauge, HVAC AC Manifold Gauge Set Built in 90 Refrigerants, Vacuum Pressure Temperature Leakage Tester for Air Conditioning, Heat Pump, Refrigeration System
Handbook of Heating, Ventilation, and Air Conditioning (Mechanical Engineering Series)