No idea if these things are durable enough to be used in a real shop or even usable at all. But, you have to admire the aesthetic of an over-engineered driver designed with products of old in mind – namely, the Baumann-Weltrecord Driver. For the machinists out there, this would be a really fun product to make on your own… and for those without the tooling/skills, if nothing else… this is a pretty neat fidget toy.

Details here.