Milguass Antimagnetic properties vx GMT?

[ingoodtime]

Hi all,

I know Rolex has introduced the parachrome blue hairspring. I have read that the properties of that piece make it anti magnetic. My question is, does this hairspring make the watch anti magnetic? And, how is a watch using this hairspring different from the Milguass as far as anti magnetic properties go?

Thanks.

[Balboa]

The alloy used in the parachrome hairspring makes it less susceptible to being magnetized than other springs but not completely immune. The hairspring is probably the most sensitive component to being magnetized, but not the only one.

The Milgauss is resistant to a magnetic flux density of 1000 gauss, and is designed to tolerate highly magnetic environments. It relies on special construction and shielding to accomplish this.

I have seen much conversation on the forum lately about magnetizing watches. Maybe I am just lucky, but I have never had a watch magnetized. I would certainly not choose between a GMT and a Milgauss based on this factor, unless I worked in a highly magnetic area.

Mark

[padi56]

I would doubt if 90% of all watches including Rolex ever get magnetised today IMHO some use the cop out magnetised for just simple regulation.Now the first signs of any mechanical watch getting temporally magnetised,it will run very very erratic.And in general speed up, and not by a couple of seconds could be minutes or come to a complete stop.Now most Swiss watches have to pass a standard for magnetism.And today most Swiss watches including Rolex are made from 99% anti-magnetic materials like nickel,with brass or beryllium, bronze or Glucydur balance wheels so very ant-magnetic to start with.The older type Nivourax hairspring although not 100% anti-magnetic they had to pass a strict anti-magnetic test as with most Swiss watches.Which is to withstand a strong magnetic field of 4800 Amps per meter,and to keeps on running with a maximum deviation of 15- 30 seconds per day.Now this test I am 100% sure that 99% of all watch wearers would never subject or come into contact with such a strong magnetic field.Although I applaud Rolex for now making there own hairspring,the main reason because the Swatch group is now stopping the supply of escapement parts to anyone outside the Swatch group.
IMHO the parachrome hairspring in the real world, I would
doubt it to show any real advantage over the Nivourax ones to the average watch wearer.And IMHO just a pure marketing hype by Rolex the only plus factor is now Rolex can say now 100% in-house built.

[ingoodtime]

Thank you for the explanation. Glad to know my F series sub and M series GMT II c are pretty resistant to magnetic fields. Ya never know when Iran or North Korea will decided to drop the big one!

[esm]

Originally Posted by ingoodtime

Thank you for the explanation. Glad to know my F series sub and M series GMT II c are pretty resistant to magnetic fields. Ya never know when Iran or North Korea will decided to drop the big one!

Interesting point.
If that happens, the last thing id worry is whether my rolexes are magnetised or not.....