Resembling a brightly colored walking stick, the ML-3 magnetic locator from SubSurface Instruments is fully waterproof (readings can be heard under water) with internally mounted controls for one-hand keypad control.
Available in 40- (short) and 55-inch (long) models, the locator is made of aircraft-grade aluminum. It has an LCD meter with bar graph that expands according to signal strength and a “+” or “-” that illuminates above the graph to indicate polarity.
Other features include speaker pitch that increases in frequency in proportion to gradient field intensity, auto-zero setting that lets users cancel or compensate for ambient magnetic or magnetic gradient in
