7
VERIFYING ACCURACY OF LASER LINES
Horizontal Beam Left/Right Tilt
Secure instrument via its mounting bracket at a distance x from a vertical wall structure as shown.
Rotate the instrument on the bracket to the left so that the right side of the beam is projected on the
wall directly across from the instrument, mark the vertical location on the wall. Rotate the instrument
to the right and repeat marking the vertical location of the left side of the beam. At ~33' (10 m) the
vertical distance d between the left-side and right-side markings should be ≤ 5/32" (4 mm). For
example, if x is set to 15' (4.6 m), the vertical distance d should be ≤3/32" (2 mm).
WALL
Vertical distance
between markings
Right
Left
d
L
L
x
R
R
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