Portable assembly for supporting magnetic and electrical sensors

Portable station for measuring and adjusting the magnetic signat

Precision grid survey apparatus and method for the mapping...

Probe for detecting the presence of magnetic material in a groun

Procedure and device for the detection of inversions of the eart

Process and device for assessing the permeability of a rock...

Rotating magnet for distance and direction measurements from a f

Subterranean target location by measurement of time-varying magn

Superconducting gradiometer-magnetometer array for magnetotellur

System for the measurement of electrical characteristics of...

System located in drill string for well logging while drilling

Three dimensional magnetic mapping process and apparatus with da

Three-dimensional detection system for detecting fractures and t

Underwater buried mine classifier

Utility iron golf club with weighting element