14
77-117
15
77-117
Calibration
NOTE: The laser unit has been calibrated at the time of manufacturing. Periodically check
the accuracy of the laser unit to ensure that the calibrated specifications are maintained.
1. Place laser unit as shown with laser ON.
Mark point P
1
at cross.
Level Beam Accuracy
2. Rotate laser unit 180° and mark point P
2
at cross.
3. Move laser unit close to wall and mark
point P
3
at cross.
4. Rotate laser unit 180° and mark point P
4
at cross.
5. Measure the vertical distance from
the floor to each point. Calculate the
difference between distances D
P1
and D
P3
to get D
3
and distances D
P2
and D
P4
to get
D
4
.
6. Calculate the maximum allowed 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
unit must be returned to your Stanley
Distributor.
1. Place laser unit as shown with laser
ON. Aim vertical beam to first corner or
reference point. Measure out half of the
distance D
1
and mark point P
1
.
Horizontal Beam Accuracy
P
1
D
1
D
1
2
D
1
2
P
1
D
1
D
1
2
P
2
P
1
D
1
D
1
2
P
3
P
1
P
2
D
2
P
4
P
1
P
2
P
3
D
2
Example: D
1
= 10 m, D
2
= 0,5 m
D
P1
= 30,75 mm, D
P2
= 29 mm, D
P3
= 30 mm, D
P4
= 29,75 mm
D
3
= (30,75 mm - 30 mm) = 0,75 mm
D
4
= (29 mm - 29,75 mm) = - 0,75 mm
0,4 x (10 m - (2 x 0,5 m) = 3,6 mm (maximum allowed offset distance)
(0,75 mm) - (- 0,75 mm) = 1,5 mm
1,5 mm ≤ 3,6 mm (TRUE, unit is within calibration)
mm
m
P
3
P
1
D
P3
D
P1
(D
P1
- D
P3
) = D
3
P
4
P
2
D
P2
D
P4
(D
P2
- D
P4
) = D
4
Compare:
D
3
- D
4
≤
± Max
Maximum Offset Distance:
Max
in
ft
= 0,0048 x (D
1
ft - (2 x D
2
ft))
mm
m
= 0,4 x (D
1
m - (2 x D
2
m))
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