Three methods of line of sight alignment are compared and contrasted for ease of use, accuracy of alignment and
cost of equipment and fixtures. The three methods are the classical use of an alignment telescope, use of a laser
beam to establish an axis, something impossible until the invention of the CW laser, and an autostigmatic
microscope used in conjunction with mechanical means to establish an axis or points in space. While the method of
choice is usually a pragmatic one of using the equipment at hand, this paper will demonstrate the flexibility of the
autostigmatic microscope approach.