Anyone tried this wire locating unit? I sometimes want to tap into circuits in walls and obviously do not want to bash a bunch of holes. Wondered if this thing would work at about 300 bucks.
http://www.tempo-textron.com/prod_detail.cfm?cat=800&subcat=802&pid=10442
http://www.tempo-textron.com/prod_detail.cfm?cat=800&subcat=802&pid=10442