Grove Enterprises Archive

  • GPL 200 Metal Detector (Spanish)

    GPL 200 Metal Detector (Spanish)

    GPL 200 Metal Detectors The GPL 200 is a resistance indicating instrument. Scans up to 22,000 sq ft. A charge is sent through the ground between any two of 4 receiving rods. A low resistance reading on the meter means you have found a good conductor, (possible treasure). A high resistance indicates a poor conductor, [...]

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