http://www.toolstop.co.uk/bosch-gms-120-professional-multi-material-cable-detector-p14110 - brand new from Bosch, it's the GMS 120 professial multi-material cable detector.
detector ( water filled plastic pipes, metal, live wires, non-ferrous metal n wood )

Features:

- The most reliable multi-detector in its class
- Maximum reliability, all objects are found and application errors are avoided due to the automatic calibration
- Reliable detection even of deep-lying objects - up to a depth of 12 cm
- Even more reliable detection of objects due to three-colour LED luminous ring
- Pinpoint indication of the object's centre with the "Center Finder" scale
- Better visibility of the result due to illuminated display
- Marking hole with LED luminous ring