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ETA Mechanical movements Caliber Product Line Winding Diameter () Height () Jewels Frequency Running time () VPH Hz; 2671 [1]: Mecaline automatic 17.2 4.8 25
The 17 jewel Valjoux 84 lever movement with stem wind was the most common Valjoux movement for the Bovet chronographs, [26] but sometimes the 77 calibre was also used. [27] The Landeron movements were more varied, which included the 47, 48, 51, 57, 59, 80, 81 calibres, and for the rare date and moonphase models, [ 28 ] the Landeron 186 was used ...
205.911 (the most commonly available movement having 17 jewels and often ordered in gold plating) 205.914 (no information available from ETA) 205.961 (a 205.911 with the addition of a GMT hand) 206.211 (a 205.911 fitted with a Dubois Depraz 2021 to make a chronograph. With 53 jewels the most jeweled quartz movement ever made)
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.
Many of these watches featured a new 207 movement, 12/0-size with 17 jewels (of which only 40,000 were made) and included such sleek designs as the Futura, Chesterfield, Wentworth, Andover, and the 14kt Rockliffe. Many of these are very similar to watches made at the time by the Hamilton Watch Company.
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 ...
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