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2. Fuel gauge - Wikipedia

   en.wikipedia.org/wiki/Fuel_gauge

   The digital fuel gauge in a 2018 Mazda 3 showing a nearly-empty tank along with a distance to empty display. Typical old-style fuel gauge on a 50 ccm chinese-made scooter from 2008, with the internationally used pictogram of a gas pump. The system can be fail-safe. If an electrical fault opens, the electrical circuit causes the indicator to ...

3. Surface-supplied diving skills - Wikipedia

   en.wikipedia.org/wiki/Surface-supplied_diving_skills

   The diver generally carries an emergency scuba gas supply connected to the helmet or bandmask at the bailout valve, or to the full-face mask via a bailout block. If the main gas supply fails, the diver opens the bailout valve and emergency gas is supplied through the same final delivery system that provides breathing gas under normal circumstances.

4. Surface-supplied diving equipment - Wikipedia

   en.wikipedia.org/wiki/Surface-supplied_diving...

   The main gas supply for surface-supplied diving can be from high pressure bulk storage cylinders. When the storage cylinders are relatively portable this is known as a scuba replacement system in the commercial diving industry. The application is versatile and can ensure high quality breathing gas in places where atmospheric air is too ...

5. Downline (diving) - Wikipedia

   en.wikipedia.org/wiki/Downline_(diving)

   In underwater diving, a downline is a piece of substantial cordage running from a point at the surface to the underwater workplace, and kept under some tension. It can be used as a guideline for divers descending or ascending, [1] for depth control in blue-water diving, [2] and as a guide for transfer of tools and equipment between surface and diver by sliding them along the downline at the ...

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   Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.

7. AOL Mail

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   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!