Thermal cameras help locate heat loss, cold spots, hot embers, heat signatures and more with pinpoint accuracy, and all at a safe distance.  Images appear as various colors on an LCD display.  Termperature range is somewhere between 32° to 482°F. Emissivity is adjustable from .01 to 1.0. Wide 17° by 17° field of view and able to focus as close as 2 ft from a surface.  This piece of equipment is useful in paranormal investigating.  Many spirits appear as cold or hot spots, undetectable by other cameras.  Portable units or detachable screen models are available.