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Rotary Watches Ltd was established at La Chaux-de-Fonds, Switzerland by Moise Dreyfuss in 1895. By the 1920s family members Georges and Sylvain Dreyfuss began exporting Rotary watches to Britain, which was to become the company's most successful market. Rotary later became the official watch supplier for the British Army.
Jewel bearing of a balance wheel, supported by a lyre-shaped spring. The Incabloc shock protection system is the trade name for a spring-loaded mounting system for the jewel bearings that support the balance wheel in a mechanical watch, to protect the wheel's delicate pivots from damage in the event of physical shock, such as if the watch is dropped.
Watches and smaller clocks do not use pendulums as the timing device. Instead, they use a balance spring : a fine spring connected to a metal balance wheel that oscillates (rotates back and forth). Most modern mechanical watches have a working frequency of 3–4 Hz (oscillations per second) or 6–8 beats per second (21,600–28,800 beats per ...
In watch movements the wheels and other moving parts are mounted between two plates, which are held a small distance apart with pillars to make a rigid framework for the movement. One of these plates, the front plate just behind the face, is always circular, or the same shape and dimensions as the movement.
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This article is within the scope of WikiProject Watches, a collaborative effort to improve the coverage of watches on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks. Watches Wikipedia:WikiProject Watches Template:WikiProject Watches Watches
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This article originally appeared on USA TODAY: CFP bracket: Full schedule, rankings, how to watch for every bowl game. Show comments. Advertisement. Advertisement. Holiday Shopping Guides.
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