The purpose of EMF Meters used in ghost hunting is to quantify evidence that is either
experienced by the investigators, or recorded by another device such as a motion
detector or dowsing rods. Using an EMF meter allows the ghost investigator the ability
to confirm the paranormal experience. EMF meters can detect the strength of
electromagnetic energy fields around the area you are investigating. It is believed that
spirits emit energy and that EMF meters can detect their presence. EMF meters are
available in a number of price ranges, from inexpensive to expensive.