PeterCDE
10167
Super Antimagnetic... (picture)
.... as stated on the screw back of this late 60?s ChronometerHF:
In order to reduce the influence of magnetic fields to achieve greater accuracy, some of the chronometer rated watches had some sort of inner case, accompanied by an anti-magnetic ring around the movement.
I don?t know the exact results; but obviously it works as this one is running pretty good.
Did you check the GP contest already?
Remember, it?s ending sunday!
It?s free, fun and just takes a minute to participate with a chance to win a nice price:
Greetings from germany,
Peter