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Why Are Jewels Put in Watches

The jewels have a low and reliable friction coefficient, making them suitable for reliable mechanisms if you put them in the center of a cog as a bearing. You needn't lubricate the...
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These are watches that have been made using jewels. The most common jewels used to make watches are usually rubies, sapphires, garnets and diamonds.
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Examine the back of the watch with the magnifying glass to determine the best place to pry open the cover. Manufacturers frequently included tiny tabs or indentations to make this ...
http://www.ehow.co.uk/m/how_6178832_jewel-number-p...
Place the pocket watch face down on the soft cloth to avoid scratching the surface of the watch. Examine the back of the pocket watch. Specifically, look for a small groove that ru...
http://www.ehow.co.uk/m/how_5946361_put-battery-po...
Nike, founded in 1978, has moved from a small sports store in Oregon to one of the largest athletic manufacturers in the world. Nike Timing, the division that focuses on watches an...
http://www.ehow.co.uk/how_6208770_put-battery-nike...
Useful sites about:

Why Are Jewels Put in Watches

Jewel bearing - Wikipedia, the free encyclopedia
Ruby jewel bearings used for a balance wheel in a mechanical watch ... In 1902, a process to make synthetic sapphire and ruby (crystalline aluminium oxide, ...
en.wikipedia.org
Watch Movements Jewels - Breitling Source
Watch Movement Jewels by Roffensian. home > articles > watch jewels ... the two metals would wear against one another over time and make the hole larger, ...
www.breitlingsource.com
83 Jewels Too Many? Part 1 [9/25/02] - TimeZone
It is the Waltham 100 Jewel watch movement, and takes pride of place along with it's cousin, the Waltham 75 Jewel watch movement as being among the ...
www.timezone.com
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