Addo-X
This page is a bit tongue-in-cheek, as this isn't a real Addo-X. As you know, I don't collect adding machines, and certainly not electrical ones. But I did find myself in need of a sticky tape roller - and behold!
If not for the pencil, you'd never know the difference!
Despite the fact that this isn't a real calculator, it needed repair when it arrived - the teeth for cutting the tape are/were molded in plastic into the rear part of the machine, and over the years had gone blunt. I stuck on a metal rail with teeth, harvested from a different tape roller, and it functions much better!