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STHT77340
Accuracy Check and Calibration
NOTE:
• The laser tools are sealed and calibrated at the factory to
the accuracies specified.
• It is recommended to perform a calibration check prior to
its first use and then periodically during future use.
• The laser tool should be checked regularly to ensure its
accuracies, especially for precise layouts.
• When performing the accuracy checks, use the largest
area / distance possible, closest to the operating distance.
The greater the area / distance, the easier to measure the
accuracy of the laser.
• The lock must be in the unlocked position to allow the laser
tool to self-level before checking the accuracy.
Level Beam Accuracy (See figure
H
)
•
H
1
Place laser tool as shown with laser ON. Mark point
P
1
at cross.
•
H
2
Rotate laser tool 180° and mark point P
2
at cross.
•
H
3
Move laser tool close to wall and mark point P
3
at
cross.
•
H
4
Rotate laser tool 180° and mark point P
4
at cross.
•
H
5
Measure the vertical distance between P
1
and P
3
to get
D
3
and the vertical distance between P
2
and P
4
to get D
4
.
• Calculate the maximum offset distance and compare to the
difference of D
3
and D
4
as shown in the equation.
• If the sum is not less than or equal to the calculated
maximum offset distance the tool must be returned
to your Stanley Distributor for calibration.
Maximum Offset Distance:
= 0,8
mm
m
x (D
1
m - (2 x D
2
m))
Maximum
= 0,0026
in
ft
x (D
1
ft - (2 x D
2
ft))
Compare : (See figure
H
5
)
D
3
- D
4
≤ ± Maximum
Example:
• D
1
= 10 m, D
2
= 0,5 m
• D
3
= 0,5 mm
• D
4
= - 1,0 mm
• 0,8
mm
m
x (10 m - (2 x 0,5 m) = 7.2 mm
(maximum offset distance)
• (0,5 mm) - (- 1,0 mm) = 1,5 mm
• 1,5 mm ≤ 7.2 mm
(TRUE, tool is within calibration)
Cubix_GB_STHT77340.indd 12 01/07/2013 15:38
12


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