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Clock The clock is one of the oldest human inventions, meeting the need to consistently measure intervals of time shorter than the natural units, the year, the day, and the lunar month. Such measurement requires devices. Devices operating on several different physical processes have been used over the millennia, culminating in the clocks of today. |
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Watch In the 21st century, technological advances in metallurgy, composite materials development and physical vapour deposition greatly influence watch design and manufacturing. Solid stainless steel, titanium, tungsten carbide, carbon fibre, high-tech ceramic and ion plating processes dominate a considerable market share of today's modern watch-making industry. Sapphire crystals are often incorporated to complement and enhance the durability of a quality watch. Most inexpensive and medium-priced watches used mainly for timekeeping are electronic watches with quartz movements. Expensive, collectible watches valued more for their workmanship and aesthetic appeal than for simple timekeeping often have purely mechanical movements and are powered by springs, even though mechanical movements are less accurate than inexpensive quartz movements. |
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Find Watches & Clocks in the Sutherland Shire |
