| I've an old Black & Decker one.  It  works, though I'm not always confident about the results and always breathe a sigh of relief when the hole is drilled and I'm not electrocuted or water spurts out.  I was particularly pleased at our old house when I managed to trace an electrical cable that defied logic and ran diagonally up a wall. Not sure about this, but I suspect that they may be thrown by metal foil that backs plasterboard that is used these days. |