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SubSurface Instruments Magnetic Locator ML-3L (Long)

Product Code: ES5188
SubSurface Instruments Magnetic Locator ML-3SY ML-3LY
SubSurface Instruments Magnetic Locator ML-3SY ML-3LY
List Price $940.00
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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 long is 55", making it the longest magnetic locator on the market. It allows you to make the biggest sweeps possible without compromising on accuracy. The ML-3 long provides ergonomic, lightweight, durable, one-handed operation option to traditional magnetic locators. It offers unparalleled durability, as all components are housed inside the aircraft-grade aluminum monotube units.

But don't let its looks fool you. It's 100 percent waterproof up to 220 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.

    Use the SubSurface Instruments Magnetic Locator ML-3L(Long) to find ferrous metals, such as:
  • Corner markers (iron or steel)
  • Mag nails and PK nails
  • Valve and curb boxes
  • Iron and steel pipes
  • Well casings
  • Manhole & Utility Box Covers
  • Steel drums & tanks
  • Septic tank handles
  • Energized electric cables
  • Marker magnets
  • Unexploded bombs (UXO)

Overall Length: 55 in (139.7 cm)
Weight: 2.8 lbs (1.3 kg)
Input Power: Three (3) standard 9-volt alkaline batteries
Battery Life: ≈ 60 Hours
Frequency: 16.5 kHz
Audio: Speaker pitch increases in frequency proportional to gradient field intensity
Visual: LCD display with bar graph indicating polarity and relative strength of signal. Also provides low battery indication.
Operating Temperature: -13° to 140° F (-25° to 60° C)
Exterior Sensor Tube: Aircraft grade aluminum
Warranty: 7 Years

Low battery indication with flashing LCD when batteries need replacing

Varying pitch audio signal mode using a moving coil speaker for enhanced audio output

Waterproof sensor tube pressured tested to water depths of up to 220 feet

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 for field conditions

Detection of buried ferrous metal objects at depths up to 8 feet or more
  • Hand gun: One to two feet
  • 175mm projectile: Four to five feet
  • 55-gallon drum: Six to ten feet
Detection of ferrous metal objects and weapons on persons

Underwater search and detection of:
  • Submerged vehicles
  • UXOs and mines
  • Salvageable wrecks
  • Pipes and cables


  • Seven year manufacturer's limited warranty


  • MPN: ML-3LY
  • UPC:
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