Cum hoc ita sit descriptum et explicatum, sive per hibernas lineas sive per aestivas sive per aequinoctiales aut etiam per menstruas in subiectionibus rationes horarum erunt ex analemmatos describendae, subicianturque in eo multae varietates et genera horologiorum et describuntur rationibus his artificiosis.
The analemma in this way has been set forth and explained, whether the figures of the hours are to be marked by the analemma according to the winter lines or the summer lines or the equinoctial or indeed the monthly lines in accordance with the annexed figure. From the analemma there may be deduced many varieties and kinds of dials and they are drawn by these technical methods.
final_alignments\Vitruvius_Architecture_Book_9.json