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TARGET IDENTIFICATION
Targets are identified both audibly and visually as follows:
1. Different pitch tones for different types of metals
2. An illuminated icon within the target category best describing it.
AUDIO TARGET IDENTIFICATION:
Tones identify targets as follows:
LOW TONE
Ferrous objects, such as iron and steel, like nails and tin cans.
Smallest-sized gold objects and steel bottle caps
MEDIUM TONE
Newer pennies (post-1982 are minted from zinc)
Larger gold pieces, small brass objects, and most bottle screw caps.
Foil, pull-tabs, nickels and most recent-vintage non-US coins.
HIGH TONE
Silver and copper coins, large brass objects
Older pennies (pre-1982 were minted from copper)
Dimes, quarters, half-dollars, silver dollars
Susan B. Anthony and Sacagawea dollar coins
Flattened aluminum cans (with a stronger signal than a coin)
LOW TONE
Nails & Small Gold
Audio Target Identification (ATI) classifies metals into three categories.
MEDIUM TONE
Pull-Tabs, Nickels, Smaller &
Larger Gold, Zinc Pennies
(Post-1982), Many screw caps
HIGH TONE
Copper, Silver & Brass
Copper Pennies (Pre-1982)
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