FISHER F-70 METAL DETECTOR Retail $799.00 Our Price $649.00 Plus Free Shipping Qty: Price: $649.00 View Shopping Cart | Empty ... Modern metal detectors work on the similar principle with more electronics added. Safety first. With the VLF technology, the electric energy into the coil goes up and down as a sine wave. If you do not have a tester to determine this, don't worry. 10 meters) because another manufacturer will immediately specify a higher range (e.g. It is more like having fun than finding treasures even if there are not so many finds after a hard day's metal detecting activity. We couldn't see 20 feet ahead of us.
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