The first discipline brings about electrical currents to circulation in conductive components while in the subsurface. The circulation of currents within the subsurface referred to as eddy currents produce a secondary magnetic field, which is sensed through the receiver coil. The magnitude of the secondary area sensed because of the https://images.google.mk/url?q=https://www.bessutilitysolutions.com/fresno-underground-utility-locating-services/