Draper Expert D389 Combined Meta and Stud Detector
"Expert Quality, Detects live and dead electricity cables, metallic water pipes, nails and wood studs in partition walling. Buzzer sounds when objects are located. Maximum depth penetration; live AC wires 75mm; metal 75mm: wood 18mm; metal pipes 38mm and copper pipes 30mm. Uses a PP3 size battery (sold separately )..