Chapter 8  Parallelism Measurements
Positioning the Laser Head and Target Machine
8-10 Measurements Reference Guide
Figure 8-6. Positioning of optics for spindle parallelism measurements—
hollow tailstock 
You are now ready to assemble, mount, and align the optics. To make a 
spindle parallelism measurement, go directly to “Mounting and Aligning 
Optics for Spindle Parallelism Measurements” later in this chapter. To 
make a coplanar parallelism measurement, continue with the next 
section, “Mounting and Aligning Optics for Coplanar Parallelism 
Measurements.” 
1
  Reflector mounted 
horizontally
2  Interferometer mounted 
where tool mounts
3  Laser head placed parallel to 
spindle, behind tailstock
1
2
3