mechanical watches
51Water Resistant mark — Water Resistant is a common mark stamped on the back of wrist watches to indicate how well a watch is sealed against ingress of water. It is usually accompanied by an indication of the static test pressure that a sample of newly manufactured… …
52Swiss Made — is a label used to indicate that a product was made in Switzerland. OverviewThe wording was formally adopted in the late 19th century [http://www.swissinfo.org/fre/culture/detail/Aux origines du Swiss made horloger.html?siteSect=201 sid=7998036… …
53Electric watch — has become a generic term for the first types of electrically powered watches which appeared in the 1940s and 1950s, before the invention of quartz watches in the 1970s. Their timekeeping element was either a traditional balance wheel or a tuning …
54Hamilton Watch Company — Infobox Company company name = Hamilton Watch Company company type = Member of the Swatch Group company company slogan = THE AMERICAN BRAND SINCE 1892 foundation = 1892, Lancaster, Pennsylvania, USA location city = Bienne location country =… …
55Repeater (horology) — A repeater is a complication in a mechanical watch or clock that audibly chimes the hours and often minutes at the press of a button. There are many types of repeater, from the simple repeater which merely strikes the number of hours, to the… …
56Quartz clock — A quartz clock is a clock that uses an electronic oscillator that is regulated by a quartz crystal to keep time. This crystal oscillator creates a signal with very precise frequency, so that quartz clocks are at least an order of magnitude more… …
57Omega SA — Type Private (subsidiary of the Swatch Group) Industry Watch manufacturing Founded 1848 …
58Water clock — For the individual water clock at The Children s Museum of Indianapolis, see Water clock (Indianapolis). A display of two outflow water clocks from the Ancient Agora Museum in Athens. The top is an original from the late 5th century BC. The… …
59Wheel train (horology) — In horology, a wheel train (or just train) is the gear train of a mechanical watch or clock.[1] Although the term is used for other types of gear trains, the long history of mechanical timepieces has created a traditional terminology for their… …
60Music box — For other uses, see Music box (disambiguation). A music box A music box (also musical box) is a 19th century automatic musical instrument that produces sounds by the use of a set of pins placed on a revolving cylinder or disc so as to pluck the… …
