Rugby 320 SG
7
Operation
Grade Swap
The grade in the X-axis can easily be swapped from positive to negative
in the Grade Entry by Digit screen.
Align the Y-axis (level) to the center line, the X-axis or cross axis grade
can be made to fall to the right or lefthand side simply by changing the
+/- sign on the display.
Grade Matching
In Direct Grade Entry mode the movement of the leveling mechanism
moves at the same speed as the grade counters.
To match an existing slope, set up the laser over the known gradebreak
(base) of the slope, and align the cross axis (level only) of the laser to
the end of the slope with both control points parallel to the direction of
grade.
Adjust the Rod-Eye receiver on your grade rod for the elevation of the
laser at the gradebreak next to the laser.
Move the grade rod to a point on the slope that is too be matched. Then,
dial grade into the laser until the Rod-Eye indicates an on-grade reading.
The percent of grade in the display is now equal to the grade being
matched.
