cost of the physical preparation and duplication of the following items
may be taxed:
(a) Summaries, computations, polls, surveys, statistical
comparisons, maps, charts, diagrams, and other visual aids
reasonably necessary to assist the jury or the Court in
understanding the issues at the trial;
(b) Photographs, if admitted in evidence or attached to documents
necessarily filed and served upon the opposing party; and
(c) The cost of models.
The intellectual effort involved in the production of these materials
may not be taxed.
