©2018 Johnson Level & Tool - Rev. 1
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10. Accuracy Check
IMPORTANT:
It is the responsibility of the user to verify the
calibration of the instrument before each use. Accuracy check
should be done indoors with dim lighting. It is critical that the
laser beam is clearly visible. If the accuracy check determines
that the laser level is out of calibration, the unit must be calibrated
by an authorized Johnson
®
service center. A list of service centers
can be found at www.johnsonlevel.com or by calling Johnson
Level & Tool’s Customer Service Department. In the U.S., call
888-9-LEVELS. In Canada, call 800-346-6682.
1. Note the X- and Y-axis direction as indicated on the top of the
laser level.
2. Place the laser level on a platform or attach to a tripod that is at
least 25
′
away from a wall, with the laser positioned so that the
X-axis direction is facing the wall. A 50
′
distance is preferred.
3. Press on the laser level to power it on.
4. Once the laser level finishes its self-leveling sequence, mark
where the top edge of the beam hits the wall as Point Ax.
5. Rotate the instrument 180° without changing the height of the
laser level. The rotating beam will temporarily stop rotating while
the instrument self-levels.
6. Once the laser beam resumes its rotation, mark where the top
edge of the beam hits the wall as Point Bx. This point should be in
the same vertical plane as Point Ax (directly above, below, or on
top of Point Ax).
7. Mark the center point between Point Ax and Point Bx as Point 0x.
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