Namque in singulis signis sui cuiusque mensis dierum numeri cava sunt perfecta, cuius bulla, quae solis imaginem horologiis tenere videtur, significat horarum spatia.
For in the several signs, holes are made to the number of the days of the several months; and the pin, which in dials seems to represent the sun, marks the spaces of the hours,
final_alignments\Vitruvius_Architecture_Book_9.json