A magnetometer or ion detector is not actually a detector of metals and gold, and a magnetometer or ion detector or any device that they say takes old gold and does not take new gold in depth is not designed as a metal detector or detector, and a magnetometer of gold or metals or the field of metals and gold does not detect, so the reason that the magnetometer can detect the magnetic field is that the magnetometer is not a metal field detector, and the magnetometer can detect strong magnetic field changes, and it does not detect the field of metals such as gold, which is non-magnetic. There are two fields, both magnet and gold, if the magnetometer detects the magnet field and does not discriminate the gold field, it basically means that the magnetometer does not have the power to detect metals.
Magnetometer, ion detector and Tesla are not in the category of metal detector systems