Owner's Manual

Calibration procedure
Note: Refer to the picture on page 2 for a diagram of the "X" and "Y" axis directions used during this
calibration procedure.
Start with a tripod or stand that has been leveled (using a carpenter's level) to allow the laser to
be turned to different positions with minimal re-leveling of the circular level vial. Attach the
laser to the tripod or stand approximately 50 feet (15m) from a wall or other stable vertical
surface. We will call the vertical surface the target. If the target has direct sunlight on it, you
may have to shade the surface to see the laser spot clearly.
1.
Turn the entire laser so that one direction of the x-axis is aimed at the target. Center the circular
level vial and turn the laser on.
2.
With the rotation stopped, point the laser spot at the target by manually turning the rotating head
and mark the beam center.
3.
Return to the laser and rotate the entire unit 180 degrees so that the opposite X-axis direction is
aiming at the target. Re-center the bubble in the circular level if necessary. Once again, point
the laser spot at the target by manually turning the rotating head and mark the beam center.
4.
The difference between the two marks (if any) is double the difference between how the laser is
calibrated and true level for the X-axis. Half way between these two marks is true level. Make a
long level mark at true level. If the difference between either outer mark and true level is within
your working tolerance, go on to step 8. If not, continue with the next step.
5.
Remove the black rubber plug from the X-axis calibration port. Using a 3/32" hex driver, adjust
the X-axis calibration. Turning the screw clockwise will raise the beam in the +X axis (see pg
2). One full turn of the screw will make approximately a 3/4"(19 mm) change at 100'(30m)
turn the screw only as much as it will take to correct any error observed in step 5. After
making the adjustment, remove the laser from the platform and give it two vertical shakes to
center the compensator. Adjusting calibration pushes on the pendulum of the compensator and
can cause it to take a set. The shaking procedure will relieve any set that may have occurred.
After shaking, place the laser on the platform and re-check the X-axis calibration. Make any
further adjustments following the above procedure.
6.
Rotate the laser 90 degrees to aim the +Y-axis (control panel) at the target. Re-center the
bubble. Check the reading at the target. If the reading is on, or within tolerance of the true level
mark, calibration is complete. If not, continue on.
7.
Remove the black rubber plug from the Y-axis calibration port. Using a 3/32" hex driver, adjust
the Y-axis calibration. Turning the screw clockwise will raise the beam in the +Y-axis (see pg.
2). One full turn of the screw will make approximately a 3/4"(19 mm) change at 100'(30m) turn
the screw only as much as it will take to correct any error observed in step 7. After making the
adjustment, remove the laser from the platform and give it two vertical shakes to center the
compensator. Adjusting calibration pushes on the pendulum of the compensator and can cause it
8.
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