hiya lads,,just wanted to know if your g,t, picks up as much deep iron as mine does,,i mean around 6 inches on a 4 x 4 inch square 3/8 inch thick iron plate,,or 2 x 4 x 2 inch iron bar at similar depth,,i was ,i suppose expecting the machine to null out ,as when its out of the ground it does,,,the machine is usually set at zero on the dial ,,it also makes a long highest pitch tone for the deep iron,,i recognise this,,but it makes the same tone on a surface 50 cent english coin too,,of course if you lift the coil you know whats what,,,but would love it to just null on large iron,,but i just have to dig,,or im wondering,,what it was i just left in the ground,,,any other ways of dealing with this problem???? rgds comcat 
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