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SubSurface ML-3S Magnetic Locator

The toughest pin finder on planet earth, the Subsurface ML-3 is built to last the apocalypse. With a 7 year warranty, the ML-3 will always be up to the task when you need it to be. Completely shock and water proof.


The ML-3 is a much-anticipated and welcome addition to the ML family of magnetic locators from SSI. ML-3 magnetic locators represent the best in innovation at work for the water/sewer industry, surveying industry and military.


That’s because the ML-3 reflects many of the items on our customers’ technological wish lists. The ML-3 short is 40″ to meet surveyors’ personal preference, providing an ergonomic, lightweight, rugged, one-handed operation option to traditional magnetic locators. The ML-3 offers unparalleled durability, as all components are housed inside the aircraft-grade aluminum monotube units.


But don’t let its looks fool you. The ML-3S is 100 percent waterproof, IP68 certified up to 250 feet – a first for the industry – so it can be used in difficult weather and submerged under water. Plus, its auto-zero feature allows the user to “cancel” ambient magnetics or magnetic gradient in the soil or water. And it’s digitally tuned, so it offers unparalleled accuracy in detecting ferromagnetic objects.

Additional product info

Product details

  • Waterproof up to 75 feet
  • Visual LCD Display
  • Low Battery Indicator
  • Detects Ferrous Objects up to 8 feet deep
  • 40″ long
  • Exceptional Durability

Package includes

  • Soft-pack custom case
  • 1 set of 9-volt batteries
  • Instruction manual


Key Features

  • Detection of ferrous metal objects, including property pins and markers, live wires, weapons, devices and other objects.
  • IP68 Certified. Waterproof tested to water depths up to 250 ft. (76 m) and a complete protection against dust, dirt, and sand.
  • Easy to use one handed operation with four button keypad:
    • On/Off button: Turns unit on or off.
    • Zero button: Automatically calibrates unit to ambient magnetic conditions.
    • Gain Up button: Increases the locating sensitivity of the unit.
    • Gain Down button: Decreases the locating sensitivity of the unit.
  • Includes soft case with carrying straps and inside pocket for batteries and manual
  • Rugged construction suitable for field conditions
  • Varying pitch audio signal mode using a moving coil speaker for enhanced audio output.
  • Low battery indicator with flashing LCD.
  • With a choice of 2 lengths (40” or 55”), it will fulfill any technician’s needs.
  • Detection of buried ferrous metal objects at depths up to 10’.
    • Handgun: 1’ to 2’
    • 175mm projectile: 4’ to 5’
    • Water Shutoff valve: 6’ to 10’
  • Underwater Search and detection of:
    • Submerged Vehicles
    • Salvageable Wrecks
    • UXOs and Mines
    • Pipes and Cables
  • Optional aluminum hard case available
  • 7 year warranty.


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