Ferrous/Conductive...
Ferrous objects/targets contain iron and therefore are attracted to a magnet, e.g. horse shoes, nails, tin cans. Many natural and man-made objects contain iron, most of these are junk targets, however some can be valuable relics. When searching for gold an iron mask is used to completely discriminate out any iron targets.
Conductivity refers to how well a target allows electrical current to flow through it. In other words a highly conductive target has low electrical resistance and therefore allows current to flow more easily. The image below shows the conductive scale, for obvious reasons most treasure/coin detectorists want to search for treasure/coins at the top of this range and therefore need to discriminate between ferrous and conductive metals.
Conductivity refers to how well a target allows electrical current to flow through it. In other words a highly conductive target has low electrical resistance and therefore allows current to flow more easily. The image below shows the conductive scale, for obvious reasons most treasure/coin detectorists want to search for treasure/coins at the top of this range and therefore need to discriminate between ferrous and conductive metals.
