Search results
Results From The WOW.Com Content Network
When saturation divers operate at great depths, they live under pressure in a saturation habitat with an atmosphere containing helium or hydrogen.Since helium atoms are the smallest natural gas particles—the atomic radius of a helium atom is 0.49 angstrom and that of a water molecule is about 2.75 angstrom—, they are able to diffuse over about five days into the watch, past the seals which ...
A diving watch, also commonly referred to as a diver's or dive watch, is a watch designed for underwater diving that features, as a minimum, a water resistance greater than 1.1 MPa (11 atm), the equivalent of 100 m (330 ft). The typical diver's watch will have a water resistance of around 200 to 300 m (660 to 980 ft), though modern technology ...
Video: Setting the bezel of a diving watch to the start time of the dive at the beginning. Divers used this in conjunction with a depth gauge and a decompression table to calculate the remaining safe dive time during dives. Dive computers rendered this cumbersome procedure unnecessary.
Blowdown silencer for emptying scuba cylinders Before internal inspection the valve must be removed after depressurising and verifying that the valve is open. Cylinders containing breathing gases do not need special precautions for discharge except that high oxygen fraction gases should not be released in an enclosed space because of the fire ...
In 2001 Seiko Epson (one of three core companies of the Seiko Group) became the majority shareholder (52%) of the company. Orient Watch became a wholly owned subsidiary of Epson in 2009. [14] After transferring its business to Epson, the company now exists as a dormant company. Epson Sales Japan Corporation markets the Orient watches, while ...
Seiko, SII and Epson logos. Three companies share "Seiko" in their official names but have different corporate visual identities.. Seiko Group (セイコー・グループ, Seikō Gurūpu) was a Japanese corporate group consisting of three core companies Seiko Holdings Corp. (Seiko; f/k/a K. Hattori & Co., Hattori Seiko), Seiko Instruments Inc. (SII; f/k/a Daini Seikosha, Seiko Instruments ...
Draeger twin hose two stage demand regulator. The most striking and well recognized example of vintage scuba gear is the twin-hose or double hose regulator, a popular style of regulator in the early years of scuba diving, since Jacques-Yves Cousteau and Emile Gagnan pioneered the first such design, the C45 Scaphandre Autonome, which was marketed in the USA (along with a tank and harness) as ...
A modern watchmaker at his workstation; he wears a magnifying loupe to more easily see the small parts of a watch A watchmaker's lathe in use to prepare a decorative watch component cut from copper. A watchmaker is an artisan who makes and repairs watches. Since a majority of watches are now factory-made, most modern watchmakers only repair ...