Been reading the mail and I do use a watch. Not sure if thats good or bad. But it is indeed amazing how well modern time pieces work. A $5 Timex with large battery that will run 5 years is a reality. How accurate is it? Good enough not to worry between time changes. By the way I also have a number of circa 1900 watches that still tick and have had far more expensive watches. Have to say as nice as the expensive watch looked and how well it ran, unfortunately it lasted about 7 years. It was a disappointment But a really nice looking watch. Regards Paul.
On Mon, Jul 11, 2011 at 5:14 PM, Paul Nelson <drhy...@qwest.net> wrote: > There's a good writeup on accuracy on wikipedia- > http://en.wikipedia.org/wiki/**COSC <http://en.wikipedia.org/wiki/COSC> > > includes a handy table comparing mechanical movement and quartz movement > requirements. > To be considered a chronometer, the daily rate must be within -4 to +6 > secs/day. The stability of the rate over time is more important than the > actual rate. > > (Interestingly- any quartz watch or clock I have is much more accurate than > my Hamilton Model 21 ship's chronometer!- a video of one of these beauties- > http://www.youtube.com/watch?**v=We1dLNXiBj0<http://www.youtube.com/watch?v=We1dLNXiBj0> > ) > > -- > Paul Nelson W5GNF "When I go, I want to go quietly, in my > Ames, Iowa sleep, like my grandfather- not > Senior Engineer (Retired) screaming, like his passengers." > Sauer-Danfoss Company > (drhy...@qwest.net) > "More hay, Trigger?" > ex-Cessna 140 N77149 (sigh) "No thanks, Roy, I'm stuffed." > > > ______________________________**_________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/** > mailman/listinfo/time-nuts<https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts> > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
