Metal detectors are electronic equipments used to locate metal objects that are hidden in baggage, ground or on the person?s body. Metal detectors are used for various purposes such as security maintenance, item recovery, archaeological exploration, and geological research. Main parts of metal detectors are control box, shaft, and search coil. Control box which has speaker, batteries, and microprocessor coordinates all activities. The performances of the detectors depend on the features of various parts. Best rated metal detectors are classified according to their performances.

Metal detectors commonly used in airports, hotels, government buildings, and other public places are of the walk-through type. Best rated walk through metal detectors have high target selection, low rate of false alarm, consistent detection, and a two way directional system. Some models that are market favourites have one eighth of an inch thick aluminium shielding panels, which are highly sensitive and easy to handle. Portable walk through model is a best rated metal detector with a simple mode of operation. They are lightweight and require no primary calibration. Prices of walk through metal detectors depend on the brand and features. Usually the prices range from $3000 to $6000. The best-rated metal detectors of this type are Garrett Magnascanner PD 6500, Garrett Magnascanner CS5000, Ceia metal detectors, and Sentrie LC.

Schools, courtrooms, sports events, and public areas use hand held metal detectors. The best rated hand held metal detectors are cheap, lightweight, sensitive, and radiation free. This model is easy to use, reliable, and requires less maintenance. Commercial, professional, all-purpose, beach, gold metal, relic metal and 2-box deep searchers are different types of hand held metal detectors. Garret Enforcer G-2 is the best rated hand held metal detector capable of identifying even very small metal objects. Waterproof metal detectors are also available to recover lost objects from water. Best rated waterproof metal detectors are Mine lab Excalibur 1000, Fisher CZ 20, Head hunter pulse, and Whites Surf Master PI Pro. Tesoro, Whites, Prizm series, Fisher, Garret, and Bounty Hunter are some brands which sell the best-rated metal detectors.