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Mechanical watches can be first COSC ISO 3159 "Chronometer" certified and after that METAS N001 "Master Chronometer" certified when all the relevant requirements are met. The first mechanical watches that met the METAS Certified Master Chronometer requirements featured Omega 8900 series automatic movements. [30]
The National Association of Watch and Clock Collectors describes Regina watches as an inferior brand of Omega, but mentions that some were adjusted highly enough to be used as railroad timepieces, which was the standard for quality watches. [2] [3] The use of Regina watches for railroad timekeeping is documented on other sites as well. For ...
OMC calibre 1516. The Omega Marine Chronometer was the first quartz wristwatch ever to be awarded certified status as a marine chronometer.The watch was made by Omega SA and developed by John Othenin-Girard and is one of the most accurate non thermo-compensated production watches ever made, keeping time to within 1 second per month [1]
It was the first UK website dedicated to the online sale of second-hand watches when it started in 2002. [3] It was the first retailer to offer a "buy-back guarantee", in which the company refunds the cost of a watch if returned in good condition after two years. [5] It services and repairs at least 600 watches per month in-house. [6]
The term chronometer is also used to describe a marine chronometer used for celestial navigation and determination of longitude. The marine chronometer was invented by John Harrison in 1730. This was the first of a series of chronometers that enabled accurate marine navigation. From then on, an accurate chronometer was essential to open-ocean ...
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