1
Measurement
retroreflector
2
Return beam to laser
head
3
Outgoing beam from
laser head
4
Beam-steering arm
assembly with
interferometer
5
Laser head
See Table 11-1 for
explanation of symbols.
Chapter 11 Diagonal Measurements
Basics
1
2
3
5
Figure 11-25. Two beams
11-48
4
Measurements Reference Guide
3
5
4
2
1