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Now I want to buy/build a metal detecting drone... I wonder if this can work for small metalic objects. Looks like its geared towards metal deposits

integrated.ugcs.com/magnetomet

@freemo Those things have been designed for mineral exploration. BTW you’ll also need a stationary base station which will provide a reference measurement. The difference of the two will be your final magnetic anomaly map, which will be able to display certain ferromagnetic minerals such as pyrrhotite and magnetite. If you’re looking for gold necklaces in the beach, this method might not be what you’re looking for.

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