ABSTRACT
An alignment ‘‘expert’’ is someone who is knowledgeable about the myriad of measuring
tools available for shaft alignment and also knows how to perform all five of the shaft
positional measurement methods and understands the limitations of them. There are advan-
tages and disadvantages to each one of these methods as discussed in Chapter 10 through
Chapter 15. There is no one method or measuring device that will solve every alignment
problem that one can possibly encounter on all the various types of rotating machinery drive
systems in existence. It is important to understand each one of these techniques so you can
select the best measurement method for the alignment situation confronting you. In many
cases, two (or more) different techniques could be used to make shaft centerline positional
measurements on the same drive system.
