well i just received a real nail finder today got a good deal on a 12x15 sef coil so i figured at the price i have to try it since i have a lot of farm fields to check,it came today so i had to take it for a walk found a lot of steel tractor parts and junk, i got a 32-34 that sounded different so i dug about 14" and it was a beautifully piece dollar 192? worn but nice,Ive had a dry spell so this was a nice hour of hunting,i know ill big digging a lot of nails but i just have to try it out at my other areas to see what happens !