Best deep range MD.

[moghri.balakrishna]

Please let me know if you come across any MD that gives consistent results beyond 6 - 10 feet deep?
i see most of the MD giving range of not more than 10 inch, there is no evidence that any MD can go deeper beyond 6ft.

please suggest if you have come across one....

Thanks a lot in advance.

[Gwil]

Large ferrous objects such as unexploded bombs and shells can be detected at depths of several feet or more by using magnetometry techniques - see for example the Forster Ferex range.
Non-ferrous objects are much harder to detect at such depths. Ground penetrating radar is probably the only workable system.

[kt315]

a gold plate 15cm x 15cm on 3 meters depth?