X-ray Baggage scanner dealer in BIHAR X-ray baggage scanner is an instrument that detects the presence of metal nearby. Metal detectors are useful for locating metal inclusions hidden within objects, or metal objects buried underground. They often contains a handheld unit with a sensor probe which may be swept over the bottom or other objects. If the sensor comes near a bit of metal this is often indicated by a changing tone in earphones, or a needle moving on an indicator. Usually the device gives some indication of distance; the closer the metal is, the upper the tone within the earphone or the upper the needle goes