Model
552BA
Straightness
Measuremen
ts
SECTION
11
STRAIGHTNESS
MEASUREMENTS
USING
THE
STRAIGH
T
NESS
RETROREFLECTOR
CONTENTS
INTRODUCTION
OPERATING SPECIFICATIONS
HARDWARE
REQU
I
RED
RELATED
MEASUREMENTS
REFEREN
CE
MATERIAL
INSTALLATION
AND ALIGNMENT OF OPTI
CS
MEASUREMENT
I)ISPLA
Y
SE
n I
NGS
MAKING A
MEASUREMENT
WHAT
AFFECTS
ACCURACY?
INTRODUCTION
Any Straightness measurement along a Vertical axis, and Straightness measurements along a
Horizontal
axis
that are in
line
with
a
horizontal
s
pindle
, re
quire
u
se
of
a Straightr,ess
R
et
r
orelreflector
to rever
se
the
direction
of
the
la
~e
r
beam.
The
Straightness R
el
r
oreflector
is a large R
etroreflector
mounted
in a housing that also supports
the Straightness Interferometer.
The
R
elroreflector
is
placed in the laser beam
to
reverse
the
beam and allow the Interferometer to be
mounted
in the machine's spindle, even
though
you
can't install
an
Optic
behind the spindle.
NOTE
If
you are interested in a vertical Squareness measurement,
do
n
ot
make a Straightness measurement
as
described In
thi
s User's
Guide
Section. Instcad, usc the
instruction
s given in Section
13.
This Section (Scction
11
)
is
intended
for
someone
who
wants
to
make Straightness measurements
only.
11·1
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