How would a magnetised watch track on a timegrapher?

[Gattaca]

Bit of advice from you experts, what would a magnetised watch do to the balance and how would it show on a (Weishi) timegrapher?

Thanks in advance

[JohnR725]

If you're doing what you're supposed to be doing you should never see a magnetized watch. In other words you're always taught to demagnetized before even putting a watch on the timing machine. Which is why the pictures below were always interesting to me? I was doing a comparison of the Chinese machine with the witschi timing machine. The person who loaned me as Chinese  timing machine gave me his collection watches because he was being puzzled by the results.

I'm also attaching a PDF which tells you what magnetism looks like.

So as you can see a watch that's magnetized can have a sine wave effect. When it's demagnetized that goes away unfortunately this watch was an extreme desperate need of servicing.

There are other ways of show up with the hairspring is stuck together of run fast basically wanted demagnetized It any time you're putting it on the timing machine just to be safe

Timing-Machine-Charts.PDF

[Kepas]

Thanks for the PDF JohnR725, very useful information never found before!!!