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Chronographs can be extremely complicated devices, but they all have the basic function of telling time, as they are watches, and of displaying elapsed time. Rieussec's chronograph was fairly simple. It was composed of two faces, a top and bottom face. The bottom face held a pool of ink, while the upper had a pen-like needle attached to it.
Used by the visually impaired and to tell the time quietly in meetings and concerts, 'dumb' repeater watches did not chime audibly, but instead produced vibrations. Instead of a gong, the hammer struck the hours on a solid metal block attached to the case, producing a dull 'thud' that could be felt in the hand.
Watches were worn during the Franco-Prussian War (1870–1871), and by the time of the Boer War (1899–1902), watches had been recognised as a valuable tool. [184] Early models were essentially standard pocket watches fitted to a leather strap, but, by the early 20th century, manufacturers began producing purpose-built wristwatches.
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The Airman featured a date function, as well as a 24-hour dial and engraved, rotating 24-hour bezel with locking mechanism that allowed capability to tell time in two different time zones. [14] Shortly after its military success, the Airman obtained civilian success with the emergence of commercial intercontinental flights, as jet-setters ...
We tested 30 automatic watches to find the best ones for every wrist and budget. Powered by the energy of your own body, automatic watches provide a mechanical beauty in our digital world.
Quartz clocks and quartz watches are timepieces that use an electronic oscillator regulated by a quartz crystal to keep time. This crystal oscillator creates a signal with very precise frequency , so that quartz clocks and watches are at least an order of magnitude more accurate than mechanical clocks .
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