H. M. I. Manufacturing Co manufactures Diving Helmet with Supply of Breathing Gas. H. M. I. Manufacturing Co also manufactures various types of nautical binoculars, ceiling lamps, nautical compass, nautical sundials, decorative globes, nautical sextant, antique telescopes, metal key rings, antique projector, magnifier, decorative candles, antique products, sand timers, lampshade, compass, residential lamps, diving helmets and wooden furniture. The Diving Helmet with Supply of Breathing Gas is used to seal diver`s face from the water and allows the diver to see. The Diving Helmet with Supply of Breathing Gas provides an anchor point on the diver for the umbilical supply of breathing gas. This Helmet also protects the diver`s head when doing heavy or dangerous work and provides voice communications with the surface. If a helmeted diver goes unconscious but is still breathing, the helmet will remain in place and continue to deliver breathing gas until the diver can be rescued.