Stanley MultiLine 1-77-122 User Manual page 18

90° Vertical Beam Accuracy
You will need at least 1,5 m
1. Place the laser unit on a level floor, and
turn on all beams.
2. Measure exactly 0,91 m (3 ft) out from
the center of the laser unit along the front
vertical laser beam. Mark this point P
3. Measure exactly 1,22 m (4 ft) out the
center of the instrument along either of
the 90° vertical reference beams, and
mark this point P
4. Measure from point A to point B; this
distance D should equal 1,522 m ± 0,3 mm
1
(5 ft ± 1/64 in). If not, the unit must be
returned to your Stanley Distributor.
5. Repeat steps 1 through 4 to check the
other beams.
18
(16 ft ) of floor space and possibly an assistant for this check.
2 2
.
1
.
2
P
1
0,91 m (3 ft)
P
1
1,22 m (4 ft)
P
P
1
D
1
P
2
2
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