Meet the GER DETECT Deep Seeker: a 5-in-1 device that can detect precious metals. It can work in all kinds of trains and has a front range of up to 3000 square meters and depth of 40 meters. It has 3D imaging, magnetic metals search, and cavity detection systems.
More gadgets like this: here
underground gold and treasure detector - Deep seeker device 5 systems
Deep Seeker can penetrate ground layers more than other comparable devices. It has a digital compass too. You can find out more about it here.
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