Many times the first tool used to help diagnosis A/C problems is
a manifold gauge set with hoses. With Robinair's new digital gauges you can enhance the effectiveness of this long trusted diagnostic tool. Calibrated to measure 91different refrigerants (R12, R22, R123, R124, R134a, R401A, R401B, R402A, R402B, R404A, R407C, R408A, R409A, R410A, R502, R507, R508B) these accurate gauges allow you to choose the temperature (degrees F or degrees C) and pressure units (PSI, bar, kPa and kg/cm3) your most comfortable using. The low side gauge has a pressure scale of -14.5 to 500psi and the high side gauge has a pressure scale of -14.5 to 800 psi.