The magnetic detector works according to the principles of magnetic diffusion and the devices that are presented as antenna metal detectors (the same long range locators with magnetic diffusion) and work according to the principles of magnetism basically have triangular and square or sinusoidal magnetic waveforms which in the field combination for They do not have the ability to distinguish and discriminate different types of metals especially gold in depth and this is also related to the flow of magnetism, which does not have the ability to penetrate deep into the earth