how to build a metal gold detector
How to make a gold detectormetal detectors for gold. How to make a gold detector device industry from natural materials: a sprig of Pomegranate tree and figs and olives level figure, tall and at least a meter, and usability are simple; take a twig and catch him with both hands and say he is good, and when vibrating shows that where you shake it contains gold, this device is very rudimentary as ...