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Benvenuti in queste pagine dedicate a scienza ed arte. Amelia Carolina Sparavigna

Saturday, May 5, 2012

On Roman and Etruscan Dodecahedra again

This morning I found the following link: http://sculpture.net/community/showthread.php?t=10801 having a quite interesting discussion on the " Roman Dodecahedron Mystery "
Let me report what SteveW wrote:
"This object is an on-the-fly surveying device. Worn on a chain around the neck, a military officer could hold it out to arms length and "fit" an enemy soldier or catapult, ballista etc between the opposing holes and then multiply by 100 (or whatever factor/number of links of the chain) to guage his distance. It would have been accurate enough to place a man within a few feet up to roughly a mile away. "
This is a quite good  reference for my paper  A Roman Dodecahedron for measuring distance
http://arxiv.org/abs/1204.6497

A figure from my paper http://arxiv.org/abs/1204.6497

Somebody is considering that there are also dodecahedra of stones. These were tools for gambling, please see An Etruscan Dodecahedron http://arxiv.org/abs/1205.0706 or the previously written post.