Model
5526A
Straightn
ess
Measurements
,
~_
J
figure
11·4.
Po
silioning the Optics
4. Decide
whether
you are making a Vertical
or
a
Hori
zontal Straightness mcasurement
on
thi
s
a)(is.
and turn
th~
Reflec
tor
so
its s
lot
is
in
the plane you want
to
meas
ure,
and the
Turning
Mirror
is
on
the appropriate side
of
the Rcflector (see
figure
11-5).
If you are making a Straightness
measurementln
the plane
perpendi
cular to the
laser
beam
(
Horizontal
Straightness), orient the Straightness Reflec
tor
perpendicular
to the
la
se
r beam
with
the Turning
Mirror's
base
toward
Ihe
la
se
r Head.
If you arc making a Straightness measurement in the plane parallel to the
la
se
r beam (Vertical
Straightness), orient the Straightness Reflec
tor
parallel
to
the
la
se
r beam and
with
the
Turning
Mirror
's
base
off
\0
one side.
As
figure
11-5 shows, the Straightness Reflector's s
101
s
hould
be
as
close
as
possible
10
the
Turning
Mirror.
11
-9
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