Portable electronic locator devices for finding underground utilities including hidden or buried pipes, conduits, power cables, or data cables by sensing magnetic fields emitted from the utilities and displaying or storing information associated with the identified utilities; buried utility locating transmitters for generating current signals for coupling to underground utilities including hidden or buried pipes, conduits, power cables, or data cablesburied utility locators including dodecahedral antenna nodes for sensing magnetic fields and determining magnetic field gradients
Electrical and Scientific Apparatus