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Re: Timekeeping and sight time records
From: Pierre Brial
Date: 2005 Mar 18, 07:34 +0400
From: Pierre Brial
Date: 2005 Mar 18, 07:34 +0400
Jared, There is actually a COSC chrononometer certification for Quartz watches, but I didn't succeed to find what are the requirements. Regards Pierre Jared Sherman a ?crit: > > Vic- > Acutally, the term "chronometer" no longer refers to a reliable time > source. AFAIK: Technically, if a watch passes an actual timekeeping test a > chronometer certificate can be awarded to that individual watch--certifying > that it can keep time to better than 2 minutes per day. That was good, for a > Rolex in 1957. It was obsoleted in the 60's by the Accutron (a mechanical > watch with an electronic heartbeat) which was never given certification but > was guaranteed to better than two minutes a day simply as a sales point. > (One minute was typical, and easily reached.) And then the quartz watches in > the 70's made one minute a month easily possible--if you had a better quartz > watch that offered any provision for adjusting the rate. The cheaper ones > didn't and don't. > > Now that sub-minute accuracy is easily achieved....Perhaps we need to > petition the Swiss (ahem) for a new standard with a new name? Chronometers > are *so* fifties.