SubSurface Instruments
Utility and leak locating equipment
SubSurface Instruments Magnetic Locators
24 products across 8 product families
ML-1 Magnetic Locator
Audio-guided magnetic locator for pinpointing ferrous objects — valve boxes, survey markers, manhole covers, well casings. One-handed 3-button operation, ~40-hour runtime on two 9V cells, 7-year warranty.
ML-3L Magnetic Locator
Extended 55" version of the ML-3 with identical electronics, LCD meter, polarity, auto-zero, and IP68 construction. Longer pole for biggest sweep coverage and reduced operator fatigue on extended surveys — same sensitivity as the ML-3S, heavier (2.8 lb) in exchange for reach.
ML-3S Magnetic Locator
Next-generation 40" magnetic locator with LCD bar-graph meter, polarity indication, auto-zero, and digital tuning at 16.5 kHz. IP68 waterproof construction (submersible), ~40-hour runtime on three 9V cells, 1.8 lb. The maneuverable pick in the ML-3 series — choose for standard sweep height and easier one-handed work.
SubSurface ML-1M Magnetic Locator
Metered version of the ML-1. Same one-handed form factor and controls, with an added LCD that shows signal strength, polarity (±), gain setting, and battery level — visual confirmation on top of the audio signal for harder-to-read targets.
BHG Gradiometer
Bore Hole Gradiometer complete kit — includes electronics and sensor. Cable ordered separately.
MUL Gradiometer
Magnetic Underwater Locator complete kit — includes electronics and sensor. Cable ordered separately.
Accessories & Parts
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