Trying to locate a concealed wooden fixing behind a tiled/plasterboard wall. Are 'stud finders' any good for this? My previous experiences is with metal detectors that looked for powered cables (there aren't any), nails (there are few) or pipes (there are several, but they're red herrings).
I read that some are able to use capacitance to trace out what's beneath the surface - would they be any good for this kind of problem? Would the tiles confuse things? Tried tapping the wall, but the results are inconclusive.
Cheers, Theo