SPEAKER WIRE 18AWG OXYGEN-FREE_ 300FT

Two-box metal detectors have long been used by prospectors, geologists, treasure hunters and public utility companies to locate large, deep objects, ore vein, pipes and cables. Fisher Research Laboratory is the recognized leader in the feld, in fact, they were granted the frst two-box metal detector patent over 60 years ago.

The new GEMINI-3 goes 10 to 20 percent deeper than its predecessor. It will trace most pipes and ore veins at least 50 percent farther, and the new crystal controlled circuitry is rock stable. The old metal-rim antenna is gone and so are the hard-to-get batteries. The GEMINI-3 is easier to use, two pounds lighter, & features Voltage Controlled Oscillator (VCO), audio target response for precision pinpointing.