Max Robinson wished for a way to open up wrist-watches and adjust the crystal trimmer.
I have owned at least two Seiko wrist watches which had a simple to open screw-on back. I opened the back and tweaked the trimmer capacitor on both of them using the ticks from WWV as a reference. After watching for a month to see which way the drift was, I re-tweaked several times. Ultimately, the best I could achieve was around +/- a few seconds per month. The problem appeared to be one of temperature compensation-- seconds gained or lost per month were different in the winter months as opposed to the summer months. These particular Seiko wristwatches had a tiny o-ring to seal them against moisture and I had no problems with leakage. Mike Baker Micanopy, FL USA --------------------------- _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
