Kong
[Moderator]
7855
My guess is the vintage pieces should be more ...
susceptible to 'easier' magnetisation due to the materials used to make the hairspring. Just my guess.
Perhaps the newer movements, with different alloys and without iron content for the hairspring , it could be of better resistance to being easily magnetised.
This is a very interesting topic to investigate further. Hopefully one of the manufacturers could share with us....or Bernard could have captured some details during his IWC factory visit.
Kong
PS : Also keen to find out if the manufacturers also test their watches with induction cooker 
.
* Magnetism, Have We Missed Out The Obvious? Laptop-Users Be Aware!
Upon reading the thread about Magnetism Effect from Watch-Winder "Navel Gazing - A Question for Watchmakers and Engineers..." by Harry Tan, I suddenly remembered there is a question I've always wanted to share and ask. The little experiments and photos we...
I am keeping my watches
But throwing out my lap top. LOL. Only kidding. Lucky for me I am right handed so I don't have to worry about cell phone magnetism. Thanks Kong for the great report and the bad news. Bill
thanks Kong. i spend a lot of the day using my laptop and
wearing 2 watches i am willing to accept time gain or loss although i havent actually noticed any. but does it do any damage to the watches themselves? Graham
I knew that there was a practical aspect...
to my collecting vintage IWC Ingenieurs! Thanks for the interesting post. Tony C....
Kong, useful information. Thanks
Apart from laptop, handphone also has very strong magnetic field. I haven't done any experiment. Don't know how actually it will affect the watch when you hold your handphone with the same hand. Regards Ling
Knows the source of the magnetism & avoid close proximity...
The distance between the handphone and the phone is far, so has no effect, except when ....you placed your watch side-by-side with your handphone. The strongest magnetic field is at the earpiece (the speaker)! I believe in taking precaution.... a few of o...
Doubt so...a soft iron cage also has 'weak points' like....
the date-window, the hole/s of the hands (hr, min, sec) and the crown. It depends on the strength of the magnetic source So prevention is better. Kong
Hmmm . . . some of my favorite watches are . . .
. . . the Ingenieur, Milgauss, and Railmaster, both vintage and modern . . . I thought it was primarily for aesthetic reasons, but perhaps there was a magnetic subtext as well . . . curiously, Art
Thanks, Kong, great detective work!
I'm particularly sensitive to magnetic fields, and get a headache just from using cell phones - a bona fide, wave pressure migraine just from having an active cell phone operating near my head/ears. But it is a good idea to note that EMI and RFI are relat...
Good information, Kong. From now on, i will only be...
wearing quartz watches when doing a lot of work on my laptops.
