Topcon Motorgrader - Page 45

Sonic Tracker II
P/N 7010-0344
2-23
On the grader the Sonic Tracker II will be positioned above the grade
reference. Its job is to maintain the exact distance from the tracker to
the grade reference, keeping the Tracker On Grade. If the Tracker is
On Grade, the cutting edge will be at the desired grade.
Figure 2-30.
STOPWATCH
On Grade
S onic T racker II
T
DESIRED
GRADE
GRADE
REFERENCE