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Gerhard Fischer developed a portable metal detector in 1925. His model was first marketed commercially in 1931; he was responsible for the first large-scale hand-held metal detector development. Gerhard Fisher studied electronics at the University of Dresden before emigrating to the United States.
Although the actual inventor of the hand-held metal detector is disputed, the hand-held metal detector was made in 1925 and was first patented by Dr. Gerhard Fisher in 1931. A metal detector had been invented some forty years earlier (1881) by Alexander Graham Bell for the sole purpose of locating a lead bullet in President James A. Garfield.
Mine detectors: A portable, hand-held or worn device to detect buried IEDs. There are many different models from several different companies currently in use worldwide by U.S. and coalition forces. There are many different models from several different companies currently in use worldwide by U.S. and coalition forces.
Scavenge for gold, coins, and other buried treasure with these metal detectors, including models from Garrett, Nokta, and Minelab.
The Fido explosives detector has been recognized by multiple awards since its inception in the early 2000s. The handheld version of the system was named one of the top ten greatest inventions by the U.S. Army in 2005, and the Packbot robotic platform with the integrated Fido explosives detector received the same award in 2006.
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