Rugby 410/420 DG
19
Checking Level Accuracy
Checking the Y-Axis
Align the Y-axis by rotating the Rugby 90° so that the Y-axis is now
square to the wall. Allow the unit to self-level completely, then check the
Y-axis in the same way as above.
5.2
Adjusting Level Accuracy
To Enter Adjust-
ment Mode
With the unit turned off, press and hold both the Up and Down buttons,
then press the Power button to put the unit in adjustment mode.
X-Axis Accuracy
Adjustment
If entered correctly, the X-axis adjustment screen will appear.
When entering the adjustment screen, a small hour glass will appear.
Wait until the hour glass disappears before checking and changing the
adjustment numbers.
Use the Up and Down arrows to change the number and move the beam
to the half-way point between the positions marked for the X-Axis. Five
counts in the display are equal to approximately 1/16” at 100 feet
(1.5 mm at 30 meters).
Press the Star button to accept this position and accept the number in
the display for the X-Axis.
Press the Star button again to move to the Y-Axis adjustment screen.
Y-Axis Accuracy
Adjustment
If entered correctly, the Y-axis adjustment screen will appear.
Wait until the hour glass disappears before checking and changing the
adjustment numbers.
Use the Up and Down arrows to change the number and move the beam
to the half-way point between the positions marked for the Y-Axis.
Press the Star button to accept this position and accept the number in
the display for the Y-Axis.
Press the Star button again to accept, save, store the adjustment
activity, and to return to the main display screen.
)
After adjustment, always check your work.
)
Always check accuracy prior to critical applications. Repeated activation
of the grade mechanism may result in accuracy variations up to ± 20 arc
seconds.
)
Pressing the power button at any time before completing the procedure
will revert the accuracy to previously saved information.
