Stanley MultiLine 1-77-122 User Manual page 17

Vertical Beam Accuracy
1. Measure the height of a door jamb or
reference point to get distance D
laser unit as shown with laser ON. Aim
vertical beam towards door jamb or
reference point. Mark points P
P as shown.
3
2. Move laser unit to opposite side of door
jamb or reference point and align vertical
beam with P
3. Measure the horizontal distances between
P and the vertical beam from the 2nd
1
location.
4. Calculate the maximum allowed offset
distance and compare to D
not less than or equal to the calculated
maximum offset distance the unit must be
returned to your Stanley Distributor.
Example: D = 2 m, D
1
mm
0,4 x 2 m = 0,8 mm (maximum allowed offset distance)
m
0,5 mm ≤ 0,8 mm (TRUE, unit is within calibration)
77-122
. Place
1
, P , and
1 2
and P .
2 3
. If D is
2 2
= 0,5 mm
2
D
P
2
1
2 x D
P
4
P
1
D
1
P D P
2 3
1
2 x D
1
Vertical
P
Beam
D
2
Maximum Offset Distance:
mm
= 0,4 x D
m
Max
in
= 0,0048
ft
Compare:
D ≤ Max
2
P
1
D
1
P
3
1
1
m
1
x D ft
1
17