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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.
A metal detector is an instrument that detects the nearby presence of metal. Metal detectors are useful for finding metal objects on the surface, underground, and under water. A metal detector consists of a control box, an adjustable shaft [dubious – discuss], and a variable-shaped pickup coil. When the coil nears metal, the control box ...
The W. A. Young and Sons Foundry and Machine Shop is a historic industrial facility at 116 Water Street in Rices Landing, Pennsylvania. Founded in 1900 and operating until 1965, it is one of the best-preserved examples of an early 20th-century small industrial machine shop in the nation. [2] It was designated a National Historic Landmark in 2016.
Modern machine shop workstation, 2009. A machine shop or engineering workshop is a room, building, or company where machining, a form of subtractive manufacturing, is done. In a machine shop, machinists use machine tools and cutting tools to make parts, usually of metal or plastic (but sometimes of other materials such as glass or wood).
Rapiscan Metor walk-through metal detectors stem originally from Outokumpu, which was one of the first companies to develop walk-through metal detectors for security screening. The systems were originally adapted from metal detectors used in the mining industry to locate parts of broken drill bits in minerals on a conveyor belt. [5]
Metal detecting (1 C, 6 P) P. Particle detectors (1 C, 83 P) Photodetectors (1 C, 19 P) Pages in category "Detectors" The following 43 pages are in this category, out ...
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