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2. Full-face diving mask - Wikipedia

   en.wikipedia.org/wiki/Full-face_diving_mask

   A diver in a pool wearing an AGA full face mask A diver wearing an Ocean Reef full face mask Head protection helmet for use with Ocean Reef full face diving mask. A full-face diving mask is a type of diving mask that seals the whole of the diver's face from the water and contains a mouthpiece, demand valve or constant flow gas supply that provides the diver with breathing gas. [1]

3. Diving helmet - Wikipedia

   en.wikipedia.org/wiki/Diving_helmet

   These may be worn with a full-face mask or half mask to provide impact protection when diving under an overhead, and may also be used to mount lights and video cameras. [3] [4] An alternative to the diving helmet that allows communication with the surface is the full-face diving mask. These cover most of the diver's face, specifically including ...

4. Motorcycle personal protective equipment - Wikipedia

   en.wikipedia.org/wiki/Motorcycle_personal...

   Full-face helmets protect the skull, plus providing protection for the lower jaw as well as the face itself. Full-face helmets offer much more protection than open-face helmets. [16] Several manufacturers have introduced full-face helmets with a flip-up front, combining the protection of a full-face with the ease of communication and donning or ...

5. Orthodontic headgear - Wikipedia

   en.wikipedia.org/wiki/Orthodontic_headgear

   Face frame: first, the face frame is a metal and plastic structure which is adjusted to fit onto the patient's face. The frame is normally stabilized on the child's face with the aid of a chin cup and a forehead pad. These are padded to ensure patient comfort. (Designs that do not require any form of chin cup also exist.)

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   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

7. Helmet - Wikipedia

   en.wikipedia.org/wiki/Helmet

   Sovereign: a gold barred-face (tournament) helm placed affronté; Peer's helmet: silver barred-face (tournament) helm placed in profile; Knight's or baronet's helmet: steel helm (earlier jousting helm, later close helm) placed affronté with visor open; Esquire's helmet: steel helm placed in profile with visor closed

8. High altitude breathing apparatus - Wikipedia

   en.wikipedia.org/wiki/High_altitude_breathing...

   A commonly used system manufactured by Poisk uses three high-pressure composite cylinders filled to 260 Bar at 20 degrees Celsius. The dimensions of the cylinders are 19 inches (480 mm) long, 4.25 inches (108 mm) diameter, and weight under 2.7 kilograms (6.0 lb). At a two-liter per minute flow the cylinders last approximately 6.5 hours each. [7]

9. Motorcycle helmet - Wikipedia

   en.wikipedia.org/wiki/Motorcycle_helmet

   An open face helmet or "three-quarters" helmet covers the ears, cheeks, and back of the head, but lacks the lower chin bar of the full face helmet. Many offer snap-on visors that may be used by the rider to reduce sunlight glare. An open face helmet provides the same rear protection as a full face helmet, but little protection to the face, even ...