The Roman Dodecahedron

I've been researching the item at the Hunt Museum. It seems to be a mystery as to what the function of this Roman artifact might have been. The dodecahedron (one of the five Platonic solids) symbolized the spirit, or ether, for the Ancient Greeks but there has yet to be a definitive explanation of this bronze, Roman object. Some suggestions have been: a candlestick holder, dice, a survey instrument, a device for calibrating water pipes, a base for army standards. There has also been presented the theory that it was used for determining the optimal sowing date for winter grain. G.M.C Wagemans presents, in detail, this theory (see article).
A map showing the sites where this mysterious artifact has been found: