Complex, but as far as mechanical calculators go AFAIK not over complicated. Or is there a simpler mechanical calculator design that packs the same functionality in such a handy package?
I would forgo handy package part. I think someone built a 3d printed Curta and it turned out 3-4 times the size of the original so much for being "handy". Maybe we should try a Odhner or Brunsviga or some other design.
