Digital Hydronic Manometer, Includes (2) 6 ft High-Pressure Rated Tubing with Shut off Valves, 1/16 in x 1 1/2 in, 1/8 in x 3 in and 1/8 in x 1 1/2 in Pairs of Pressure Probes, 8 ft Poly Tubing, 90 deg Flare to 1/4 in NPT Fittings, Adjustable 8 in Wrench, Hard Carrying Case, High Pressure 3-Way Valve, NIST Calibration Certificate, PTFE Tape, Maximum Gauge Pressure 60 psi, Measuring Units bar, cm wc, hPa, in Hg, in wc, kPa, mbar, mm Hg, oz/in, psi, Minimum Gauge Pressure 0 psi