I have managed to slightly magnetise a rather expensive digital caliper, despite the metal parts being stainless steel, which is causing havoc with all measurements when tiny pieces of swarf are trapped in the jaws. Not having a proprietary de-magnetiser I wonder if there is any domestic equipment that I could use to do the job. I know the technique is to slowly draw the tool away from a rapidly changing magnetic field, but I can't think of anything suitable.
Cliff Coggin.