NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Watch accuracy
From: John Kabel
Date: 2001 Nov 16, 6:11 AM
From: John Kabel
Date: 2001 Nov 16, 6:11 AM
I found it easy to plot my watch's loss or gain for a month, to see if the drift was linear. I found that it was. If you do this, and find a predictable drift, it would be easier to simply build that error into your calculations than keep hassling with adjustments. I would never let the drift get past 20 s or so, because you can then get confusion on the minute readings. There is something to be said for keeping the number of adjustments down. I believe that it may affect the mechanics of any analog movements over time if adjustments are frequent. For the record, my Casio gained 13 s in 30 d. My current analog Seiko gains 4 s every 20 d, but I am still checking. John Kabel London Power and Sail Squadron London, Ontario, Canada