Louis Agassiz's Iron Auger

Origin
Louis Agassiz was the first person that theorized that the world had undergone an ice age. He used this man-sized iron auger to drill into the Unteraar Glacier, on which he had constructed a hut to live in in order to investigate the structure and movements of the ice and to measure the glacier's temperature.

Effects
When the auger is held, the holder is able to measure temperatures equal to and below that of the freezing point of water (32 degrees Fahrenheit/0 degrees Celsius), and know the exact temperature mentally. Extensive use of the auger, however, will drop the holder's own body temperature until the body shuts down (usually around 90 degrees Fahrenheit or less).