Metal detectors use electromagnetic induction to detect metal. Uses by police and military personnel include de-mining (the detection of land mines), the detection of weapons such as knives and guns, especially at airports, geophysical prospecting, archaeology and treasure hunting. Handheld metal detectors are especially important at security screening, because it allows the inspector to move the metal detector all around the subject. Metal detectors are also used to detect foreign bodies in food, and in the construction industry to detect steel reinforcing bars in concrete and pipes and wires buried in walls and floors. Many people use consumer metal detectors to look for coins on the beach, coin shooting, relic hunting, treasure hunting, beach coming, and much more. Most metal detectors are good to detect metal only within a foot or so below the ground. Metal Detectors are also known as metallic army navy securities supplies, government issued military treasure hunters, cheap discounted beach medal detection devices, etc. Metal Detectors are commonly misspelled as beech sand mining and diggers detectors, etc.
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