Originally posted by pavil
If it's of Roman origin then why does the map of where they have been discovered show NONE in Italy proper? That plus not much Roman documentation of it, leads me to think it's not a Roman invention.
The last measuring point is obtained on the day that sunbeams fall through all the measuring points. In spring, the same measurements can be done (at the end of the measuring period, there will be no measuring point through which the light will fall through because the sun will be higher in the sky), but the hypotheses assumes that the dodecahedrons were only used in autumn.