Sundials
Dodecahedron With Sundial Faces at Palazzo Madama
http://stretchingtheboundaries.blogspot.it/2012/09/dodecahedral-sundial.html
Dodecahedron With Sundial Faces at Palazzo Madama
http://stretchingtheboundaries.blogspot.it/2012/09/dodecahedral-sundial.html