Workstations provide controlled air pressure to a test stand where the functions of dive regulators can be checked at sea level conditions. Regulators to be examined are yoked to the test stand valve; where inter-stage pressure is transmitted to the instrumentation via an adapter coupled to the BC hose. First stage intermediate pressure, lockup repeatability and stability, and systemic air tightness can then be evaluated. A simple probe is then attached to the 2nd stage outlet while manual breathing is performed, the initial inhalation/exhalation effort (cracking resistance) can be read with high precision on a Magnehelic gauge. A unique “reading lock” device momentarily freezes the breathing effort readings on the gauge, so that values accurate to 0.1” of water column can be obtained! SPECIFICATIONS - Pressure Ratings: Up to 5,000 psi inlet; Regulated output test pressure - 100 to 4,500 psi to test stand. Air Supply: From air storage bank, industrial cylinder, or scuba tank; 5-ft. hose with scuba tank yoke included. Pressure Gauges: Inlet / Output - 5,000 psi, 2.5" face, 2% accuracy; Regulator Intermediate Pressure - 300 psi digital, 1% accuracy. Breathing Effort Gauges: Dual scale (+ / -) 0 - 2 inches water column across a 4" face, manual model. Shop Air: Supplied at about 100 psi by a special integrated regulator to an outlet coupler; 4-ft hose and blowgun included. Accessories: Instruction manual covers the installation, maintenance, and use; complete description of testing procedures and parameters included. All required adapters provided. Shipping Weight: 50 lbs.