
I bought this device because I Me got tired of wondering what was in my concrete walls when hanging shelves or pictures or installing new electrics and plumbing. I have three inexpensive stud finders, but when used on a known piece of rebar 3cm below the wall surface, each gave different results, none of which were correct. The two searchers were unable to locate a known active electrical cable with a 10 A heating load about 2 cm below the wall surface. The Bosch D-Tect 150 was accurate to within a millimeter on known fixtures and wiring, and helped locate several undocumented electrical wires and domestic water pipes. The cost of the D-Tect 150 was much less than the cost of repairing if I pierced one of the water lines I was about to do. It was money spent!

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