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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.
Scavenge for gold, coins, and other buried treasure with these metal detectors, including models from Garrett, Fisher, and National Geographic. The Best Metal Detectors to Uncover Buried Treasure ...
The Holzmine 42 was designed to be a low cost, and easy to produce anti-tank mine which could utilize the woodworking industry while relieving pressure on the overstretched metalworking industry. [2] An advantage of a wooden mine is that it is hard to detect with metal detectors since there are few metal components but in wet conditions, the ...
U.S. Army soldiers use a military standard metal detector. 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 ...
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 ...
A stud finder (also stud detector or stud sensor) is a handheld device used with wood buildings to locate framing studs located behind the final walling surface, usually drywall. While there are many different stud finders available, most fall into two main categories: magnetic stud detectors and electric stud finders.
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