Itemque observanda postmeridiana istius gnomonis crescens umbra, et cum tetigerit circinationis lineam et fecerit parem antemeridianae umbrae postmeridianam, signanda puncto.
After midday the growing shadow of the indicator, when it touches the line of the circle and marks a post-meridian shadow equal to the antemeridian, is to be marked with a point.
final_alignments\Vitruvius_Architecture_Book_1.json