Internal cogs and gears of a 17-jewel Swiss watch
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Internal cogs and gears of a 17-jewel Swiss watch
Watch cogs. Internal cogs and gears of a watch escapement. The red circles are ruby jewels used in bearings. An escapement is a device within a watch which provides periodic impulses to the balance wheel that helps to regulate time- keeping. Jewels, whether natural or man-made, are used in watch bearings because their smooth surfaces offer little friction resistance and are hard-wearing. Photograph of a 17-jewel Roamer watch from Switzerland
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6400029
© DAVID PARKER/SCIENCE PHOTO LIBRARY
Cogs And Gears Common Item Familiar Object Gears And Cogs Items Mechanism Objects Ruby Watch
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