The technology that accompanies an investigation is far from unsophisticated and varies depending on the type of haunting reported. A typical haunting will require the following; cameras with slow, regular, fast and infra-red films, another camera for time exposure facilities, a Polaroid camera, notebooks, graph paper, pens of various colours, sound recording apparatus, including normal, miniature and very sensitive, extending leads, thermometers (again regular, maximum/minimum and thermographs [an instrument that produces a trace or image representing a record of the varying temperature or infrared radiation over an area or during a period of time]), torches, batteries and spare bulbs, measuring tapes, black cotton, colour adhesive tape, gummed and self adhesive (to seal rooms, doorways and windows), tie-on luggage labels, mirrors, candles, matches, screws, nails, panel pins, a hammer, luminous paint, a strain gauge (to measure the force necessary to close or open doors and windows), a spring balance (to measure the weight of obstacles that are moved by paranormal means) and containers to collect suspicious material. This is just for a standard haunting.