FACT: The compass point is affected by magnetic fields.
THEORY: In theory, spirits/ghosts will give off electro magnetic fields. This can cause the needle to spin or point in the wrong direction.
RANGE: The range of the compass is from your location to the magnetic north pole. Any magnetic fields surrounding the location could alter the direction of the needle.
HOW TO USE: First know what direction normal north is. During the investigation pay close attention to which direction the needle is pointing. When the investigation is complete write down the summary in the field report.
READINGS: A normal reading is always north. Possible paranormal activity is when the compass is reading the wrong direction or if it begins to spin.