Scuba set
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A scuba set, originally just scuba, is any breathing apparatus that is entirely carried by an underwater diver and provides the diver with breathing gas at the ambient pressure. Scuba is an anacronym
Diving with a recreational open-circuit scuba set
Classic twin-hose Cousteau-type aqualung
A single-hose regulator with 2nd stage, gauges, BC attachment, and dry suit hose mounted on a cylinder
Scuba harness with backplate and back mounted "wing" buoyancy compensator Regulator first stage Cylinder valve Shoulder straps Buoyancy compensator bladder Buoyancy compensator relief and lower manual dump valve DV/Regulator second stages (primary and “octopus”) Console (submersible pressure gauge, depth gauge & compass) Dry-suit inflator hose Backplate Buoyancy compensator inflator hose and inflation valve Buoyancy compensator mouthpiece and manual dump valve