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ETA Mechanical movement features Caliber Hours Minutes Seconds Date Day ... 17 jewels, 21600vph, reserve 42h) 2850 (manual wind, sweep-second, 17 jewels, 28800vph ...
The project to establish the Standard watch originally aimed to make a steel-cased 17 jewel watch available to, and within the means of, almost any worker in the People's Republic of China. The often elaborate case-backs and signed crowns of many vintage Standard watches are a testimony to the pride of the local enterprises that built them.
Ruby jewel bearings used for a balance wheel in a mechanical watch movement Cross-section of a jewel bearing in a mechanical watch. This type of donut-shaped bearing (red) is called a hole jewel, used for most of the ordinary wheels in the gear train. It is usually made of synthetic sapphire or ruby, press-fit into a hole in the movement's ...
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.
The hand-winding movement of a Russian watch. A mechanical watch is a watch that uses a clockwork mechanism to measure the passage of time, as opposed to quartz watches which function using the vibration modes of a piezoelectric quartz tuning fork, or radio watches, which are quartz watches synchronized to an atomic clock via radio waves.
Today's owner of the brand, Volmax (based in both Moscow and Switzerland), is the only authorized company allowed to use Gagarin's name and likeness in watch production. Gagarin received his 17-jewel watch with a manual-wind Poljot movement when he graduated from the Soviet air force flight school in 1957.
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