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Montre mystérieuse (mystery watch), circa 1889, Musée d'Horlogerie of Le Locle, Switzerland.It is the first transparent watch. A mystery watch or mystery clock, in horology, is a timepiece whose working is not easily deducible, because it seems to have no movement at all, or the hands do not seem to be connected to any movement.
Junghans Uhren GmbH is a German watch and clock manufacturer. The company is located in the district of Rottweil, in the town of Schramberg , Baden-Württemberg , southwest Germany. In 1903, Junghans was the largest watch factory in the world and in 1956 it was the third largest chronometer manufacturer right behind Rolex and Omega .
Martin Burgess (born 1931), , English watchmaker and author, Sculptural Clock, Gurney Clock. Wolfgang Hilberg (1932–2015), German engineer and professor of electronics, inventor of the radio clock. Jürgen Abeler (1933–2010), German art collector, watchmaker, goldsmith and gemologist.
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A watchclock is a mechanical clock used by security guards as part of their guard tour patrol system which require regular patrols. The most commonly used form was the mechanical clock systems that required a key for manual punching of a number to a strip of paper inside with the time pre-printed on it.
The tower clock of Norwich Cathedral constructed c. 1273 (reference to a payment for a mechanical clock dated to this year) is the earliest such large clock known. The clock has not survived. [95] The first clock known to strike regularly on the hour, a clock with a verge and foliot mechanism, is recorded in Milan in 1336. [96]
November 1917 ad for an Ingersoll "Radiolite" watch, one of the first watches mass marketed in the USA featuring a radium-illuminated dial. Radium was discovered by Marie and Pierre Curie in 1898 [1] and was soon combined with paint to make luminescent paint, which was applied to clocks, airplane instruments, and the like, to be able to read them in the dark.
To celebrate 75 years of the watch factory, Lacher reissued 75 of its legendary 40s-pilot-watches. 80% of the used components have been replicated from the original model. All the other components, especially the pinions and the wheel plate for the indirectly powered central second pointer, were produced in restricted amounts.
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