Historical Miniaturization: An Astronomical Ring that Opens into a Sphere

The Swedish History Museum shared this nifty gadget on their Facebook page:

FB Historiska museet Astronomy Ring1

We all know looks can be deceiving, right? That’s definitely the case with this item. It’s a German 16th-century ring that turns into an astronomical sphere:

FB Historiska museet Astronomy Ring2

It’s a brilliant example of the possibilities of miniaturization technologies. I’m immediately thinking of a fantasy or alternate history world where a (rich!) scholar takes this with them when traveling for work.

Images by Historiska museet via Facebook

The Visual Inspiration occasional feature pulls the unusual from our world to inspire design, story-telling, and worldbuilding. If stuff like this already exists, what else could we imagine?