Metal object locator including frequency shift detector

Metallic cable-locating apparatus and method having an image cap

Metalliferous objects detector having a pair of angularly positi

Method and apparatus for determining direction to and position o

Method and apparatus for digital detection of electronic...

Method and apparatus for digital detection of electronic...

Method and apparatus for digital detection of electronic...

Method and apparatus for displaying signal information from a me

Method and apparatus for distinguishing metal objects...

Method and apparatus for electromagnetically surveying a remote

Method and apparatus for locating a buried element of inductive

Method and apparatus for locating and retrieving a golf ball hav

Method and apparatus for locating buried conductors in the prese

Method and apparatus for locating buried conveyances using locat

Method and apparatus for locating high resistance utility...

Method and apparatus for locating objects using parametric...

Method and apparatus for locating underground cast iron pipe...

Method and apparatus for making measurements of patterns of...

Method and apparatus for monitoring the relative position of a c

Method and apparatus for precisely locating a buried utility con