Segmented field dielectrometer

Selective/ground neutralizing metal detector

Self-calibrating electromagnetic field sensor for locating burie

Service tee marker fixture with concentric attachment sleeve

Simultaneous time-domain and frequency-domain metal detector

Skin depth compensation for an in-ground transmitter

Skin depth compensation in underground boring applications

Soil and time modeling for improved electromagnetic locators...

Sonde locator

Sonde with replaceable electronics and a rotatable, tubular inne

Step current inductive antenna for pulse inductive metal...

Switched coil receiver antenna for metal detector

System and method for detecting an underground object using...

System and method for detecting low metal content buried mines

System and method for determining orientation to an...

System and method for locating an underground probe having ortho

System and method for locating underground utilities...

System and method for locating underground utilities...

System and method including a buried flexible sheet target impre

System and method with passive resonant circuit markers for loca