however I feel this offer isn't real. [1]https://searx.be/search?q=digital+magnetic+field+probe (is anyone able to rescue [2]yacy.net? their public portal isn't functioning for me) I intended to provide a real offer, but have not checked my funds and don't know where you live or if you are able to share a shipping address. Update from my insanity: ferromagnetic particles don't emit a magnetic field. I guess you would want a force sensor on the magnet, rather than a field probe. (Sad. I like field probes.) If you offer stronger evidence smarter people than me will listen. I bet searx has force measurement devices too though. References 1. https://searx.be/search?q=digital+magnetic+field+probe 2. http://yacy.net/