Precise Alignment Of The Axes - Leica Rugby CLA User Manual

3.7
Precisely aligning X-
and Y-axis
Operation
2. Set the desired grade in the display.
Ensure that you first align the axes and then set the grade, other-
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wise the Rugby may trigger the HI.Alert.
Ensure that the Rugby is properly positioned over a control point.
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The direction of the X-axis is seen from the front of the Rugby,
sighting over the top of the Rugby.
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3. Rotate the Rugby slightly until the alignment marks are aligned with
your second control point.
The Rugby CLA‑ctive sighting scope can be used to help with the
☞
alignment.
4. Once the Rugby is aligned, you can start working.

Precise Alignment of the Axes

Under most conditions, the raised alignment marks on the top of the Rugby
are adequate for alignment of the axes. For a more precise alignment, you can
use the following procedure.
Objective of a precise alignment:
To establish Point A on the Y-axis as a reference and take an elevation
•
reading.
To enter grade into the X-axis and then adjust the position of the laser
•
until the original elevation at Point A is again found.
1. With 0.000% grade in both axes, set up the Rugby directly over a
grade stake and roughly align the Y-axis to a second grade stake
(Point A).
2. Take an elevation reading at Point A using a Combo and a survey
rod.
3. Enter +5.000% grade into the X-axis. When grade is entered into the
X-axis, the Y-axis acts like a hinge or fulcrum.
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