A handheld temperature gauge used by L.E.M.U.R.
Some claim the presence of ghosts is signified by "cold spots" in the environment. These may be spirits which cannot materialize.
L.E.M.U.R. is concerned with the difference between objective and subjective information. "Objective" means information which is external to the human perception, and can be recorded using instrumentation. "Subjective" is personal, and based upon perception.
For example, if you can see an apparition in a room, but other people in the room cannot, this would be considered "subjective." On the other hand, if you see a ghost in a room, and are able to capture a photograph of it, you would have "objective" evidence.
L.E.M.U.R. is not sure whether or not "cold spots" are a subjective or objective experience. Do people only feel cold when they come into contact with ghosts, or does the temperature actually drop?
In order to help answer these questions, L.E.M.U.R. uses instruements which help us measure temperature changes in the environment. Any correlation between these changes and apparent ghostly activity is recorded.