7
Rugby 400 DG 1.1.0en
Operation
Grade Swap
The grade in the X and Y axes can
easily be swapped from positive to
negative in the Grade Entry by Digit
screen.
A typical application for this feature is
road building. For example, with the
Rugby setup on the crown of the road
and with one axis aligned to the center
line, the 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 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.