On Fri, 03 Oct 2008 10:36:13 -0700, David Nebenzahl
wrote:

As others have suggested, forget the electronic detectors. Get yourself
a simple, cheap mechanical/magnetic stud finder. Mine, made by Stanley,
has a small powerful magnet suspended on a pivot. It's very sensitive
and clearly swings when over a screw or nail (ferrous, of course).

grin

http://ecx.images-amazon.com/images/...500_AA200_.jpg