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Stanley STHT77341 - Cross 90 Manual

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14
STHT77341
Horizontal Beam Accuracy (See figure
I
)
•
I
1
Place laser tool as shown with laser ON. Aim vertical
beam towards the first corner or a set reference point.
Measure out half of the distance D
1
and mark point P
1
.
•
I
2
Rotate laser tool and align front vertical laser beam
with point P
1
. Mark point P
2
where the horizontal and
vertical laser beams cross.
•
I
3
Rotate laser tool and aim vertical beam towards the
second corner or set reference point. Mark point P
3
so
that it is vertically in line with points P
1
and P
2
.
•
I
4
Measure the vertical distance D
2
between the
highest and lowest point.
• Calculate the maximum offset distance and compare
to D2 .
• If D
2
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:
= 0,5
mm
m
x D
1
m
Maximum
= 0,05
in
ft
x D
1
ft
Compare: (See figure
I
4
)
D
2
≤ Maximum
Example:
• D
1
= 5 m, D
2
= 1,0 mm
• 0.5
mm
m
x 5 m = 2.5mm
(maximum offset distance)
• 1.0 mm ≤ 2.5mm
(TRUE, tool is within calibration)
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:
= 0,5
mm
m
x (D
1
m - (2 x D
2
m))
Maximum
= 0,05
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
• 0,5
mm
m
x (10 m - (2 x 0,5 m) = 4.5mm
(maximum offset distance)
• (0,5 mm) - (- 1,0 mm) = 1,5 mm
• 1,5 mm ≤ 4.5 mm
(TRUE, tool is within calibration)
Cross90 GB_STHT77341.indd 14 01/07/2013 09:50
… 14 …


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