No-Motion All Metals mode allows manual ground balancing for deep searching, or preset balance for easy pinpointing; Ground Trac™ uses two stages of differentiation between ... There are special industrial metal detectors like underwater metal detectors obviously for use underwater. Most dealers offer metal detectors at a decent price, often very close to the discount values found at huge department stores. There are three different types of metal detectors; motion detectors, pulse detectors and multifrequency detectors. We were in Walmart and saw some walkie talkies, and both of us were thinking the same thing, what a good use these could be for our hobby. The short bursts of electricity are allowed to pass through a coil or wire which causes magnetism. Headphones allow this threshold to be set even lower, giving improved performance. inexpensive metal detectors will have the same beep tone regardless of the metal detected.
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