Sonic Tracker Positioning in Relation to Reference
P/N 7010-0341 www.topconpositioning.com
6-5
Cub and Gutter Tracking
When tracking a curb and gutter, keep the tracker 14 to 24
inches above the lip of gutter (Figure 6-4). If the tracker is
placed too high, the sonic cone may pick up an unwanted
surface, such as the face of the curb.
Figure 6-4. Tracking a curb & Gutter
Joint Matching and Tracking Sub-grade
For joint matching and tracking sub-grade or most surfaces
keep the tracker between 14 to 24 inches (Figure 6-5). A
good rule of thumb is to set the tracker about 18 inches
from the reference.
Figure 6-5. Joint matching & Tracking Sub-Grade
14"
to
24"
S
onic
T
racker
II
T
14"
to
24"
S
onic
T
racker
II
T
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