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I agree - I use a magnetometer app on my iPad. A few years ago, I did invest in the Elma version of this demagnetiser. I have a background in electronics and when I cracked the unit open to explore it, I was very impressed - and reassured - by the careful attention given to the design and the quality of construction and quality of materials. It will out-live me, and not because of any shock hazard 🙂 I find it very reliable for demagentizing watch movements, but for tools, especially elongated tools like tweezers and screwdrivers, they need to be done in sections, a couple of centimetres at a time. I always also repeat the demagentising process several times with the object (usually a movement) oriented in several different planes - horizontally at 0 and 90 degrees and vertically. Checking on the magnetometer app, the movement is effectively degaussed and I’ve not yet had to repeat the process. Just laying the movement horizontally and giving it a single shot sometimes works, but often doesn’t, hence my process above. Using a compass, I doubt I’d ever know whether the process was effective or not. The magnetometer is much more sensitive. I still use the Lepsi app, which was available for free, but which I don’t think is available on the App Store any more. -
Hello everyone, I have just started on my watch repair journey. Many mistakes …pinging springs and lost pallet forks !! My great Uncle was a clock maker with a royal warrant and his ancestor stated the first hall in London so hopefully some thing rubs off . Looking forward to following the topics on this forum -
@RichardHarris123 I just look for a relative increase or decrease as it passes over the watch, not an absolute value. It it doesn't change much passing over the watch, than I conclude little or no magnetism, if I see the value jump from the background number, than I know I have a problem -
By RichardHarris123 · Posted
How accurate is it? Does it take the earths magnetic field into account, what is an acceptable reading? -
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