Tum postea sumenda est sexta decima pars circinationis lineae totius rotundationis, centrumque conlocandum in meridiana linea, qua tangit circinationem, et signandum dextra ac sinistra in circinatione et meridiana et septentrionali parte.
Next we take as radius the sixteenth part of the circumference of the circle. From centres given by the meridian line at the two points where it touches the circle, and with that radius, points are to be marked right and left in the circle, both on the southern and on the northern part.
final_alignments\Vitruvius_Architecture_Book_1.json