Axisymmetric optical components such as lenses are frequently centered with the use of rotary air bearings, guided
by optical instrumentation that use reflected or transmitted light. This report systematically explores methods of
adjusting optical elements including wedged-shims, fine pitch screws, and positioning rods with a goal of defining the
accuracy that can be expected. Analysis of the performance is supported with experimental data. A characterization and
discussion of the merits of each positioning method is additionally presented.