Picture from the March 2015 eclipse
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Picture from the March 2015 eclipse

It was unfortunately cloudy but the darkness was cool and spooky. 20th march 2015

u/starquakegamma — 8 days ago

Roman Dodecahedron as a jewellers finger measure

I've just received a 3D printed copy of a museum scan of a dodecahedron (I'll link the source below). It's great to finally have one in the hand, a few observations now that I can handle it.

  • The protrusions feel even more like "feet" to me now - at all angles the object rests stably on 5 feet (more or less).
  • The inner circles are very smooth, something could rotate within quite easily.

However the object is still quite baffling, although one thought did occur to me that I'll throw in to the ring - maybe it's a jewellers tool for sizing fingers for ring making. A jeweller might have the skill to create such an object, even though it would be far simpler to make one from wood. Jewellers might copy them from other jewellers once observed. My fingers fit quite nicely into several of the holes, the next step is to find some example ring sizes from the same era to compare.

The scan I used:

https://www.myminifactory.com/object/3d-print-dodecahedron-242168

EDIT: There are some Dodecahedron examples where the holes are a bit larger than average finger sizes which makes this idea a bit less likely.

u/starquakegamma — 10 days ago