Roman Dodecahedron

This is a Roman Dodecahedron found at Aventicum, Avenches

http://www.aventicum.org/de/Musee/expop/documents/MRA_angl_web.pdf

The Roman Dodecahedra were ancient telemeters,

as I discussed in the following papers:

Roman Dodecahedron as dioptron: analysis of freely available data

http://arxiv.org/abs/1206.0946

A Roman Dodecahedron for measuring distance

http://arxiv.org/abs/1204.6497

Ancient and modern rangefinders

http://arxiv.org/abs/1205.2078