A Metal Detector Can Be Useful

As the name suggests a Metal Detector is a kind of instrument, which is used to detect metal with the help of electromagnetic induction. It helps in the detection of land mines, weapons like knives or guns at airports, in treasure hunting or in archeology. It can also be helpful in detecting foreign bodies in food. Construction industries find it useful in detecting steel reinforcing bars present in concretes, pipes, or wires in walls and floors. It can sense any electrically conductive piece of metal. Metal detectors came into being around the end of the 19th century.
Metal Detectors