On Jun 7, 12:59*pm, Boris Mohar wrote:
Can anyone figure out what was it used for?

http://en.wikipedia.org/wiki/Roman_dodecahedron
--
Boris

I would suggest: the Roman equivalent of a "Turner's Cube" :-)

http://www.google.com/search?sourceid=chrome&ie=UTF-8&q=%22turner's+cube%22

In slightly more modern times, plumbing apprentices once demonstrated
making a 6-way junction by (mostly) hammer, starting from sheet lead.
I've seen the result and they are very impressive. One even went as
far as to put flanges with bolt holes on.