Metal detectors use electromagnetic induction to detect metal. In 1881, Alexander Graham Bell constructed a crude metal detector in an attempt to find an assassin's bullet in President James Garfield. Gerhard Fischar patented a portable version in 1931. In 1881, Alexander Graham Bell constructed a crude metal detector in an attempt to find an assassin's bullet in President James Garfield. Gerhard Fischar patented a portable version in 1931. Upright "archway" detectors are used at entrances to secured buildings, such as courthouses or airports, to detect metallic weapons which may be brought in. Small portable "wand" detectors are used by security staff to frisk persons for the same. Larger portable metal detectors are used by treasure hunters to locate metallic items, such as jewelry or coins, buried shallowly underground. There are three types of metal detectors: beat frequency oscillator, induction balance, and pulse induction


Metal Detectors and Metal Detecting > Metal detectors

Metal detectors


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Metal Detector build your own
BFO ( beat frequency oscillator ) metal detectors use two oscillators, each of which produces a radio frequency. One of these oscillators uses a coil of wire that we call the search loop

Submitted 01/07/06.

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Metal Detector products - Kellyco Metal Detectors - 5 Star Dealer - Since 1955
Metal Detectors & Metal Detector Supplies. Free shipping on your Metal Detector. Providing quality, easy to use metal detectors for beginners to experts since 1955. Real Experts to help you. 5 star dealer.

Submitted 01/07/06.

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Rons Dixie Metal Detectors & Treasure Hunting Supplies
DixieMetalDectectors.com offers a product line of treasure hunting supplies & industrial, under water metal detectors manufactured by Garrett, Bounty Hunter, Shadow, Tesoro, Fisher & more!

Submitted 01/07/06.

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Tesoro Metal Detectors - Official company web site with metal detector models for treasure hunting land or water.
Lightweight metal detector models for treasure hunting, coins, relics, gold, silver, artifacts, diving, beach combing.

Submitted 01/07/06.

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The Official Minelab Electronics Home - The world's leading gold, jewelry, coin, security and treasure detecting products
Minelab metal detectors use advanced technology to help you find all the gold, silver, jewelry and valuable treasures hidden underground or underwater. Never find unwanted foil, pull tabs or trash again with the Explorer II. Home of Halcro amplifiers - the best audio product on the market.

Submitted 01/07/06.

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The Official Website of Viking Metal Detectors - metal detectors
Possibly the best known and longest established name in the Metal Detecting Industry. Manufacturers and suppliers to hobbyists, water authorities, local councils and many other service industries throughout the UK for over 25 years.

Submitted 01/07/06, edited 01/07/06.

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Troy Custom Metal Detectors, Inc.
Welcome to Troy Custom Detectors: Home of The Shadow X5 and X3 metal detectors and treasure hunting accessories

Submitted 01/07/06.

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Whites Electronics Metal Detectors
White's Electronics makes the world's finest metal detectors for treasure hunting

Submitted 01/07/06.

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