Cartier Tank a vis Collection Privee

All set?
As an extra second was added at the end of 2008, I decided to reset my watches to the NBS WWV 10mhz signal this morning.This will provide the opportunity to check the relative accuracy as well.The watches reset are:Citizen GMT, quartzHamilton Jazzmaster, quartzOmega Seamaster Aqua Terra, quartz (wife's)Omega Seamaster Aqua Terra, chronometerOmega Seamaster SMP, chronometerRolex Explorer II, chronometer ("Superlative Chronometer" as stated on the dial)It will be interesting to track the accuracy of each. For some reason I would not be surprised by the AT's being the most accurate of the automatic and the quartz watches.I invite you to add your watch(es) to the group for comparison as well. We can track them together.Fr. John?

Diagram of each part of the Elgin 760/761 movement
These are screenshots from a blog that had some pages of a service manual for the 760/761 movement series.I have grown to love mechanical movements, but I don't know train bridge from a car bridge Since Elgins are my thing at the moment, it is high time I learn about the parts that make my watches work.I hope you find these interesting as well. If these are too small, just right click to view and they should blow up to be readable.

Help Please - Valjoux 7750 Problem
One of my watches with this movement has stopped auto-winding. Neither wearing it nor leaving it on the winder keeps it running. When I wind it manually it runs perfectly and all chrono functions work properly. I can hear the rotor spinning when I shake the watch but it's not winding the mainspring. Before I bring it in for service (which is expensive on a chrono) has anybody had this problem?

The SMP clasp is something special
I noticed that the clasp on my SMP is really heavy duty. The clasp is thick and the buckle is meaty. The divers extension link is also sturdy, who else has noticed that this is one hell of a watch.

I'm able to correct 5712 accuracy nightly...
I just bought a 5712/1A and I have noticed something interesting. When I wear the watch, it is accurate within .5 seconds over a 12+ hour span (well within tolerance). However, when I set it down for the night, it loses or gains time based on the direction I lay the watch down beyond tolerance. For instance:Crown up: loses approx. 2 seconds per 10 hours.Crown down: gains approx. 2 seconds per 10 hours.Crown right: loses approx. 2 seconds per 10 hours.Crown left: loses approx. 1 second per 10 hours.Face up: gains approx. 1.5 seconds per 10 hours.Face Down: gains approx. 1.5 seconds per 10 hours.At first I was a bit annoyed that I could have the watch perfectly accurate to the second throughout the day, but when I woke up in the morning, it would lose or gain about 2 seconds (which is more than double the stated tolerance of +2/-3). But now, I find it somewhat useful in that I simply check the exact time when I take the watch off at night, and if it is fast, I place it crown down, and if