Ads
related to: garrett handheld metal detectors
Search results
Results From The WOW.Com Content Network
The most common type of metal detector is a hand-held metal detector or coil-based detectors using oval-shaped disks with built-in copper coils. The search coil works as sensing probe and must be moved over the ground to detect potential metal targets buried underground.
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.
The Crosby Garrett Helmet is a copper alloy Roman cavalry helmet dating from the late 2nd or early 3rd century AD. It was found by an unnamed metal detectorist near Crosby Garrett in Cumbria , England, in May 2010.
Crosby Garrett Helmet: 2nd or 3rd century United Kingdom: 2010 Undisclosed Cunetio Hoard: Late antiquity United Kingdom: 1978 British Museum/Wiltshire Museum: Dairsie Hoard: 3rd century United Kingdom: 2014 National Museum of Scotland: Derrynaflan Chalice: 8th or 9th century Ireland: 1980 National Museum of Ireland: Escrick ring: 5th to 6th ...
The company's first major product was an oil cooler for military aircraft. Garrett designed and produced oil coolers for the Douglas DB-7. [9] Boeing's B-17 bombers, credited with substantially tipping the air war in America's and Great Britain's favor over Europe and the Pacific, were outfitted with Garrett intercoolers, as was the B-25. [12]
With the help of magnets, metal detectors and magnifying lenses, investigators search for even the smallest pieces of evidence, such as fragments of molten machinery parts, match heads, glass and ...
Ads
related to: garrett handheld metal detectors