NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: mechanical chronometers
From: hellos
Date: 2006 May 15, 19:54 -0500
Alex, so you are saying that marine chronometers typically vary ["go"] randomly
inaccurate by a second each day? In addition to the usual fast/slow overall rate
as compared to the time?
I wasn't familiar with time-pieces being compared that way but it does make
sense. Would you have any idea how that compares to better quality mechanical
watches (i.e. Rolex perhaps) and to the quartz chronos? I would expect the
quartzes "go" much less, and that a solar powered quartz of even the cheapest
source would outperform these instruments in all ways, no?
>>The average chronometer "goes" about a second per day,
and the best ones about 0.2 of a second.
"Going" of a chronometer is the technical term which describes
non-uniformity of its rate<<
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From: hellos
Date: 2006 May 15, 19:54 -0500
Alex, so you are saying that marine chronometers typically vary ["go"] randomly
inaccurate by a second each day? In addition to the usual fast/slow overall rate
as compared to the time?
I wasn't familiar with time-pieces being compared that way but it does make
sense. Would you have any idea how that compares to better quality mechanical
watches (i.e. Rolex perhaps) and to the quartz chronos? I would expect the
quartzes "go" much less, and that a solar powered quartz of even the cheapest
source would outperform these instruments in all ways, no?
>>The average chronometer "goes" about a second per day,
and the best ones about 0.2 of a second.
"Going" of a chronometer is the technical term which describes
non-uniformity of its rate<<
--~--~---------~--~----~------------~-------~--~----~
To post to this group, send email to NavList@fer3.com
To , send email to NavList-@fer3.com
-~----------~----~----~----~------~----~------~--~---