Delta 4000 Metal Detector User Manual Page 17

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2-Digit Target Identification
The 2-digit value in the middle of the screen provides a specific target value
to help identify buried targets more accurately. With practice in the field, you
will learn to associate target values with specific objects. Coins are more
likely to yield the same value with each pass of the coil due to their concentric
shape. The presence of multiple targets will yield multiple tones. Trash
objects are more likely to yield a different number on each pass. The angle
of the coil relative to an object may also influence target identification. If
waving coins over the searchcoil for practice, wave with the flat side parallel
to the searchcoil; this is the position you will most often find coins buried in
the ground.
2-Digit TARGET IDENTIFICATION Values
Some Typical Values
Numeric Common for Common
Category Value Range Objects Objects
Iron 10 - 39
Foil 40 - 55
Nickel 56 - 60 US Nickel 58
Alum 61 - 75
Zinc 75 - 79 US Zinc Penny 76
(after 1982)
Dime 80 - 85 US Dime 82
US Copper Penny 81 - 82
(pre-1982)
Quarter 86 - 90 US Quarter 87
50¢+ 91 - 99
US Half-Dollar 89
US Silver Dollar 94-96
TARGET IDENTIFICATION
continued
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