Chapter 7  Squareness Measurements in a Vertical Plane
Mounting and Aligning Optics for the Second Axis Measurement
7-14 Measurements Reference Guide
Figure 7-7. Assembling and attaching the turning mirror
4 Orient the turning mirror so that one opening faces the laser head and one 
opening faces up (Figure 7-8). Then, using the turning mirror attachment 
screws, attach the turning mirror to its base.
1
  Turning mirror 
attachment screws
2  Optical square
3  Turning mirror
4  Turning mirror base
5  Turning mirror base 
attachment screw
90
OPTI
CA
L SQ
UA
R
E
10777A
90
90
1
0
7
7
2
A
T
U
R
N
I
N
G
M
I
R
R
O
R
1A
1
077
2
-6
7
00
2
 A
S
S
Y
1
2
3
4
5