Product Manual

2. Take an elevation reading at Point A using the receiver 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.
4. With +5.000% in the X-axis, take a second reading at Point A.
5. Alignment:
•
If the second reading is equal to the first reading, the X-axis is aligned cor-
rectly.
•
If the second reading is greater than the first reading, rotate the Zone80 DG
clockwise (to the right) until the two readings are equal.
•
If the second reading is less than the first reading, rotate the Zone80 DG coun-
ter-clockwise (to the left) until the two readings are equal.
☞
An optional sighting scope is available for the Zone80 DG which improves the axis
alignment for second day setups. It is recommended that you first perform the pre-
cise alignment procedure, and then adjust the scope to these axes.
3.9 Laydown Operation
You can use the Zone80 DG in laying down position to create a vertical plane for layout and
alignment jobs.
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Zone80 DG Laying down screen
Vertical plane of laser
light
22 Operation