The highest training guide for any type of metal detector or detector belongs to advanced systems with a scientific circuit design
Metal Detector or any type of detector that has a high power and high quality circuit has special settings for separating and discriminating different types of Metals especially Gold and silver separately
The most complete and scientific training guide or instructions for working with a metal detector or GPR or ground penetrating radar or ground handy radar or mine detector or antenna metal detector is the same as the onboard locator in the world specifically for frequency systems with VDI number settings in Edit and Threshold surface and size because the circuit of this group of systems is scientifically designed and during testing it also detects Gold and Silver and different types of Metals separately in depth and separates and discriminates
Source of books by the scientist of electronic sciences radar Ramin Kaykhosravi with permission