Why would you want to detect metal? Oh, I don't know … maybe you want to find some gold in the ground. You could dig up ALL the dirt, or you could find the location that has the gold before you dig.
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I Found Toys at the Beach and Change at the Park Testing These Expert-Approved Metal Detectors
Most metal detectors have a round head called the “search coil,” which is the actual detector itself. It has two parts, the transmitter coil and the receiver coil, which work in tandem to produce an ...
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