SPIT CL 30 Manuel page 16

Checking the CL30
It is recommended that you check your CL30 periodically to assure its
accuracy.
To check level :
Choose two walls approximately 12-15 feet (4-5 meters) apart (figure 1).
Figure 1
Turn on the CL30 to the "auto level" setting.
With the laser 6 inches (15cm) away from and
facing Surface #1, carefully mark the center of
the line where the lines cross. Label this mark
"A1" (figure 1).
Swivel the laser 180 degrees and mark the center of the line where the lines
cross on Surface#2. Label this mark "B1" (figure1).
Now move the laser 6 inches (15cm) away from and facing Surface #2
(figure 2). Carefully mark the center of the line where the lines cross. Label
this mark "B2" (figure 2).
Swivel the laser 180 degrees and mark the center of the line where the lines
cross on Surface #1 (figure2). Label this mark "A2"
Figure 2
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