Apprentice projects are still a thing where the apprentice system is still in place. It varies depending on industry but you will be given a low level mostly po

Apprentice projects are still a thing where the apprentice system is still in place. It varies depending on industry but you will be given a low level mostly pointless high tolerance task you must complete(make a perfect(we will verify it with a micrometer) cube out of steel using only a hand file), this mainly proves you have the correct mindset to work in that industry. Having said that, these dodecahedrons are complex enough, they would probably a journeyman level project at minimum. Personally, I like the theory they are surveying/measuring instruments, probably coupled with enough mysticism and numerology that decorative versions were made to satisfy the non-professional market. think something like masonic emblems. Noting that the guilds for these sort of things were full of trade secrets and obscure rituals.