Underground pipe locators

Manhole locators

Manhole locators allow to determine the position of metal manhole covers under asphalt even at great depths.

The GI series manhole locators allow the location of metal covers, manhole covers for gas-water connections and sewer hatches under any road cover. They are characterized by high detection sensitivity together with great handling and robustness. The patented antenna allows, with the scanning of the ground to identify underground metal parts with extreme precision, the detection is highlighted by an instant modulation of the acoustic signal.


  • Lightweight and robust for use on site
  • They allow to delimit the edges of the manhole cover
  • Great detection depth
  • Ergonomic handle
  • Excellent value for money

Models and technical specifications

GI 441GI  551GI 661GI 771GI 881
Antenna Diameter (cm)20202033020
Maximum Depth (cm)8080808080
Weight (Kg)1,91,31,91,51,9
Sensitivity adjustmentYESYESYESYESYES
Power supplyAlkaline batteriesAlkaline batteriesAlkaline batteriesAlkaline batteriesAlkaline batteries
Adjustable telescopic rodYESNOYESNOYES
Carrying bagStandardStandardStandardStandardStandard
HI-FI headphoneOptionalOptionalOptionalOptionalOptional