Magnetic Locator Introduction

For over half a century, Schonstedt has been a leader in designing and manufacturing underground magnetic locators.

It began back in 1953 with the development of magnetometers for military & aerospace applications, giving us today the GA-52Cx, the “yellow stick” that remains the choice of surveyors around the world to find underground markers, septic tanks, and other ferrous objects. The GA-72Cd soon followed, complete with extra-rugged construction, a visual display, and a sensitivity indicator that makes it an underground locator of choice, especially useful in unexploded ordnance (UXO) and demining applications.

  • Next came the innovative GA-92XTd: the extendable, easy-to-use and portable magnetic locator. The GA-92XTd retracts to fit in its holster, and extends for one-handed operation and fingertip control.
  • MAGGIE is a pistol-grip magnetic locator that combines the best features of two flagship Schonstedt products—the sensitivity and precision of the GA-52Cx, and the single-handed operation and visual display of the GA-92XTd.
  • Now comes Spot, the “Next Generation Stick Locator” with engineering and accuracy equal to the GA-52Cx, in a sleek, ultralight-weight package with improved ergonomics. If you’re looking for High Accuracy at a Lower Cost, put Spot on the trail of your next locate!
Magnetic locating diagram with iron marker and illustration of the two magnetic fields from the locator that are bent by the iron marker.
Visit How Magnetic Locators Work for an illustrated introduction!

Schonstedt magnetic locators “find it underground”:

Cast or Ductile Iron Pipes, Corner Markers, Curb & Valve Boxes, Steel Enclosures, Mag & PK Nails, Manhole Covers, Marker Magnets, Reinforced Septic Tanks, Steel Pipes, UXO, Well Casings

Scroll down to the Magnetic Locator Comparison Chart to find the unit that’s right for you.

Magnetic Locator
Comparison Chart

Major featuresPistol-grip
Visual Display
Highest Accuracy
Lowest Cost
Highest Accuracy
Most Popular
Lower Cost
Highest Accuracy
Most Rugged
Most Popular
for UXO &
Demining Applications
Most Portable
Comes with Holster
Extends & Retracts
Audio OutputYesYesYesYesYes
Visual OutputYes  YesYes
Battery IndicatorYes  YesYes
Sensitivity Indicator Yes  Yes Yes
Sensitivity controls 4 Levels5 Levels5 levels4 levels4 Levels
Headphone CompatibleYesYesYesYes