Metal Detector : Metal detector /indicator is a portable device that responds to metal that may not be obviously visible. A metal detector is an electronic instrument which detects the presence of metal close by. Metal detectors / locators are useful for finding metal in corporations hidden within objects, or metal objects covered underground. These can be classified as Hand Held Metal Detectors (HHMD) and Door Frame Metal Detectors (DFMD) and are used to identify any metallic object like pistol / revolver, knife etc. hidden by a criminal on his individual or in his things. These devices are principally utilized at passage of the premises of airport, hotels, malls, metro stations, security gates / offices of establishments etc. Door frame metal detector radiates sound and light when a individual carrying metallic object passes through it after which the individual is exposed to physical search and frisking. Screening Equipment / X-Ray Machines : At all airports, hotels, malls, m...