Garrett GTI 2500 Owner's Manual page 67

OFF and make your initial target decisions
based on the conductivity indications of
the cursor as they relate to the Target
ID Guide. When you decide a target is
worthwhile, press and hold the TARGET
IMAGING touchpad and what you have
just discovered can often be determined
by relating the size of your discovery as
shown on the Imaging Grid with the Target
ID Guide.
The searchcoil must be centered over your
target to produce accurate size and depth
information. Always remember that as you
center the target, its size and depth on the
Imaging Grid will appear to grow smaller
and shallower. The correct reading on the
Imaging Grid will always be the shallowest
and smallest that will be achieved when
the coil is positioned directly over the
target. Before hunting with the Search
Image aid turned ON which will give you
size and depth information constantly,
read carefully the Target Imaging section
to make certain that you understand why
the sizes and depths of your targets may
seem to change as the searchcoil is moved
around.
Graphic Target Imaging 2500 - 67