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Rugby 410/420 DG 7Operation
)
If no button is pressed, the display will revert to the main display after
ten seconds.
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.
7


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