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M-101 Rebar Locator and Metal Probe

The Fisher M-101 metal detector was designed specifically for finding reinforcing bars and other metal objects embedded M-101 Kit imagein concrete, conduits, PK nails, wiring, wall studs and other metallic objects. Users may expect accuracy to ¼” of the centerline of the rebar.

Turn the instrument on and only the penetration control need be adjusted for most operations, allowing maximum penetration depth for metals. A preset circuit eliminates ground eff ects caused by highly mineralized materials and false signals due to loop movement.

The M-101 also can effectively locate small metal items carried on or within a person and is substantially more sensitive than the average low cost metal detectors used at airports, so that a given metal item can be found at a greater distance from the search loop itself. Searches in water may be up to the control box. The search loop and cord are waterproof.

In the Fisher tradition, the M-101 is aff ordable, tough, and simple to use while providing maximum performance. A
two year limited warranty comes standard with the unit.


Search Loop Cover – 3 ½” diameter press-on, fitted cover for the search loop to prevent abrasion.


  • Detects all metals.
  • Accurately pinpoints steel reinforcing bars, or “rebars” in concrete.
  • Detects intersections of rebar or mesh.
  • Audio and visual indications of nearby metal.
  • Rugged construction.
  • Quick tune ready for operation in seconds.
  • Fully waterproof search loop.
  • VLF (Very Low Frequency) operation.
  • Operating Frequency: 4.5kHz
  • Power Supply: +/– 9V, 2 – 9V NEDA 1604
  • Weight: 2.8lbs (1.3kg)
  • Dimensions: Control Box: 3 x 5 x 6”
  • Shipping Dimensions 26 ½ x 6 ¼ x 6 ¼”