[nemo]

FWIW, the device is called an 'orrery'. When it was made in Syracuse, it wasn't a product of an industrial base, but was a project made by a certain sort of mathematician and scholar doing cutting edge engineering and applied mathematics. The Antikythera one seems to go back to the traditions from Archimedes' workshop which was amazingly advanced. Archimedes wrote a treatise on building them (now lost, alas). Orrery making in something like Archmedes' tradition continued on for hundreds of years outside Syracuse, esp. in Athens and Alexandria, and we have references to orrery making through the ages. The art of making them was a product of libraries and schools where they were created by scholars as an academic craft, not an industrial production facility.