Walkover locator

{
  "id": "MLC-T-ENV-029890",
  "term": "Walkover locator",
  "field": "Environment",
  "definition": "1. Used in horizontal directional drilling, a commonly-used locating technology in which a battery-operated transmitter, called a sonde, in the drill-head uses wireless signals to send information about the drillhead’s location, depth, and orientation to a handheld receiver carried by a crew member on the surface. These signals allow the driller to adjust the drilling process to keep the drillhead on the desired borepath. Compare to gyroscopic steering tool and remote magnetic guidance system.\n\n2. Used in horizontal directional drilling, a commonly-used locating technology in which a battery-operated transmitter, called a sonde, in the drill-head uses wireless signals to send information about the drillhead’s location, depth, and orientation to a handheld receiver carried by a crew member on the surface. These signals allow the driller to adjust the drilling process to keep the drillhead on the desired borepath.",
  "subject": "Land, waste and cleanup",
  "references": [
    "Glossary of Technical Terms: Office of Underground Storage Tanks",
    "Office of Underground Storage Tanks Technical Terms"
  ],
  "url": "https://mlchart.com/terminology/environment/walkover-locator/"
}