This project is to create an instrument that can detect metallic conductors even a very thin metallic foils can also be detected. The working of this instrument is based on detecting the magnetic field produced by Eddy currents generated in a conductor when it is placed in a varying magnetic field. An LED will light when metallic conductors is detected. Futhermore, the magnetic field waveform for different type of matallic conductors can be obtain in matlab. At least 4 different types of metallic conductors's waveform is shown in matlab.