DEPTH READING
Your CZ-3D will give you a quick and approximate depth reading 
of coin-size targets, usually within an inch.
1.  Place the search coil lightly on the ground at least 
twelve inches away from your target area.
2.  Press and hold the PINPOINT button.
3.  Still pressing the PINPOINT button, bring the coil back 
over the target and pinpoint its location by stopping 
the  coil  over  the  point  where  you  get  maximum 
pitch, volume and needle response.
4.  Place the search coil lightly on the ground directly 
over  the  target,  and  still  pressing  the  PINPOINT 
button,  note  the  position  of  the  needle  over  the 
depth reading scale. For example, if the needle is 
midway between the four inch and six inch marks, 
your target is approximately five inches deep.
      You  will  quickly  realize  that  the  depth  reading 
procedure is just like pinpointing, however there is 
one very important  difference:  When  pinpointing, 
where or when you press the pinpoint button is not 
real  critical.  It  is  often  desirable  to  “detune”  your 
target by pressing the button when the search coil 
is very close to your target and either on the ground 
or slightly above it. When taking a depth reading, 
however, it is important that the coil be placed lightly 
on  the  ground  at  least  twelve  inches  away  from 
the target (or any other metal) before pressing the 
PINPOINT button. Also, remember that while you can 
pinpoint just about any size target, depth reading is 
only accurate for coin size targets.
 
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