A.T.I. Abbreviated term for Audio Target Identification. A certain audio pitch identifies the type of metal object located. Black Sand Also known as Malagnite. It is Black iron oxide in mineral form.
Black sand is one of the highest mineral conditions that a detector has to contend with.
Usually any type of concealed treasure consisting of a quantity of money or other valuables. Usually dating from 1965 and on. The depth indication dial is located at the top right of the LCD panel. The depth arrow will lock on and emit simultaneously with the target identification. Usually when the depth hits 10 inches, the target identification will emit an arrow under deep target.