Kellyco Metal Detectors

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Fisher FX-3 Metal Detector
with 2 Year Warranty!
fisher metal detector logo
If it's in the Ground or in the Water
a Metal Detector will Find it!!

Find Cash Boxes - Coin Chests - Treasure Caches - In Iron or Steel Boxes Or Chests

Fisher's FX-3 Ferro Probe is a differential Induction Magnetometer designed to locate iron and steel relics, property markers, pipes and other large ferrous objects buried beyond the reach of ordinary metal detectors. Two sensors respond only to the magnetic field of ferromagnetic objects, ignoring all other materials (copper, aluminum, brass, etc.). As a target is approached, the VCO (Voltage Controlled Oscillator circuitry responds with an increase in pitch and volume then nulls directly over the target.

Search with extreme sensitivity: The FX-3 is extremely sensitive to objects with large surface areas, highly magnetized objects and long objects buried vertically. Large or small, if it's ferrous, the FX-3 was designed to find it.

Locate Relics and Artifacts with ease. FX-3 Probe is dynamite in finding Civil War relics from the smallest uniform buttons and musket balls to the largest belt buckles and box plates. This probe can get into places detector coils CANNOT reach. Search deep into thickets, trench formations, even between rocks! Find smaller targets than two-box detectors but has more depth than standard search coils.

Comes Complete with Battery, Carrying Case and Instruction Manual

  • Detects ferromagnetic objects only (iron and steel) Ignores all other metals
  • Finds smaller targets than a two-box detector, yet searches at greater depth than ordinary search-coil-type detectors
  • Slow-motion circuitry with VCO audio output
  • Built-in speaker, optional headphones
  • Long battery life on a single 9-volt transistor battery, automatic battery check
  • Waterproof probe
  • Simple, one-knob operation
  • 2-year limited warranty


  • Small 2 Blade Pocket Knife 8" - 18"
  • Bayonet / Knife 12" - 24"
  • Short & Long Barrel Arms 14" - 36"
  • Iron Money Chest 23" - 60"
  • Cannon Ball 40" - 52"
*Approximate depth data for ferromagnetic objects only. Actual depth will be determined by such factors as conductivity  of object, size of object , orientation of object and length of time in ground.