DISCRIMINATION POINTS
10
9
Bench test your detector in an area free of metal and electrical
interference. For each item, return the DISC control to “0” and
rotate the knob while passing each item below the searchcoil.
Stop the knob when the item no longer signals or the sound
character becomes broken. This number will be a discrimination
reference point. It will not be possible for you to test all items on
the list, but this will give you an idea what different levels of
discrimination will do to your target. The items below are in
order of conductivity. Please note the good items mixed with the
trash items.
COMMON NAIL
FOIL
THIN RINGS (14K)
"TAB" OF PULLTAB
THIN RINGS (10K)
MEDIUM RINGS (14K)
NICKEL COIN (5 CENTS)
PULLTAB (WHOLE)
$2.5 GOLD COIN
"RING" FROM PULLTAB
THICK WEDDING BAND (14K)
THIN RING (STERLING SILVER)
3-CENT COIN (SILVER)
SQUARE TAB
$5 GOLD COIN
SMALL CLASS RING (10K)
INDIAN HEAD CENT
SCREWCAP (ALUMINUM)
HALF-DIME (SILVER)
ZINC CENT (COPPER PLATED)
LARGE CLASS RING 10K
2-CENT COIN
½ REALE COIN (SILVER)
BARBER DIME
"WHEAT" CENT
HALF-CENT (COPPER)
$20 GOLD COIN
CLAD DIME
1 REALE COIN (SILVER)
MERCURY/ROOSEVELT DIME (SILVER)
LARGE CENT (COPPER)
CLAD QUARTER
QUARTER (SILVER)
HALF-DOLLAR (SILVER)
DOLLAR COIN (SILVER)
