Ok, I bought a cheapo stud finder/range finder/laser level from Tesco's, and shock horror, it didn't work, so I tossed it the bottom drawer of my bench with my small collection of rubbish (and more than a few pencils from IKEA).
A few weeks later I saw an astonishingly simple device in one of the American mags, that relied on rare earth magnets - you simply waved a carrier over the wall, and the magnet would "stick" to the screws in the studs.
Cue tight fisted West Walian - I had a few rare earth magnets on my fridge door, so I tried it using my hand as the carrier, BINGO:lol:; absolutely flawless. I couldn't think of a simpler, more elegant and fool proof way of finding studs in walls.
(doesn't find cables though) :roll:
Regards
Aled
Edit : if you know you're over a stud, there shouldn't really be a cable or pipe there anyway, and if there is, they should be deep enough not to worry about.