But lest the various movements of the indices and the various beginnings
of the divisions tend to cause some fatigue, the precaution has been
taken, that all the indices by common law are moved from the top towards
the right of the observer, and from thence all the arithmetic divisions
of the circles take their beginning. And lest the multitude of different
figures should deceive the eye, the larger divisions of the circles have
been marked by Roman numbers, that is, by capital letters of the
alphabet; others, in other places, by differently colored numbers. Thus,
the movements of the indices, the distribution of the circles and the
multitude of numbers not only do not disturb the eyes and the mind, but
rather marvelously delight them.