Traditionally, a forked branch or stick that is believed to indicate subterranean water or
minerals by bending downward when held over a source. Divining rod, a rod, commonly
of witch hazel, with forked branches, used by those who discover water or metals under
ground.
Dowsing or divining rods, It is also called rhabdomancy (which the dictionary defines as: (from the Greek) Divination by means of a wand or rod, especially for discovering underground water or ores), can also be made of metal, and bent in an "L" shape - one for
each hand. In ghost hunting, when the rods cross while being held out in front of the
"dowser" they indicate spirit presence at the spot the dowser is at.
Is this really a tool that investigators need? What is your opinion?