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MIL-W-46374 is a specification first published on October 30, 1964, [1] for US military watches. [2] The 46374 was specified as an accurate, disposable watch. In its span, it encompassed metal and plastic cased watches with both mechanical and quartz movements. [2] The 46374 replaced the MIL-W-3818, reducing cost and inheriting the dial from ...
Hamilton took possession of Aurora Watch Company's machinery shortly after incorporation. [citation needed] The first watch made under the Hamilton name was an 18-size 17-jewel pocket watch in 1893. During Hamilton's first fifteen years, only two size movements were produced – the 18-size and the smaller 16-size. [3]
Moving coil system, contact controlled: refers to watches with a balance wheel with integrated coil, fixed magnets and mechanical contacts. [4] Examples of this technology are Hamilton 500 (first retail electric watch in 1957), [5] Epperlein 100, Champion (Ruhla / UMF), Slava 114ChN and Timex M40.
The first digital mechanical pocket watches appeared in the late 19th century. In the 1920s, the first digital mechanical wristwatches appeared. The first digital electronic watch, a Pulsar LED prototype in 1970, was developed jointly by Hamilton Watch Company and Electro-Data, founded by George H. Thiess. [72]
Quartz movement of the Seiko Astron, 1969. The quartz crisis (Swiss) or quartz revolution (America, Japan and other countries) was the advancement in the watchmaking industry caused by the advent of quartz watches in the 1970s and early 1980s, that largely replaced mechanical watches around the world.
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