Regulator Intermediate Pressure Quick-Tester: This 2.5” gauge attaches directly to the buoyancy compensator hose for fast checking the intermediate pressure of any regulator first stage without dismantling the unit. A manual bleeder vent allows easy cycling of the first stage to test the consistency of lockup. The regulator’s second stage (or octopus) acts as an overpressure valve in case of serious staging failures. Great for field service, charter boats, and class demos.