Setting Surface Stringline
P/N 7010-0341 www.topconpositioning.com
3-3
Position the tracker 14 to 18 inches above the stringline
(Figure 3-2).
Figure 3-2. Position of Tracker in Correlation to Stringline
NOTICE
NOTICE
It is important to use a stringline with a diameter
at least 1/8” thick. The sonic tracker can detect a
smaller diameter stringline, but when stretched
on the surface to be paved the surface below the
stringline will be within the working window so
you want to make sure you have a strong return
signal.
S
onic
T
racker
II
T
14"
to
18"