Addiator , used for addition and subtraction, consists of metal sliders within a metal case operated with a stylus.
The top part is for addition the bottom for subtraction.
Manufactured by Addiator Gesellschaft in Berlin, production ran from1920 to 1974
Thanks for looking, front porch pick up available or shipping can be arranged
b3
post id: 7852063515
posted:
updated:
♥ best of
[?]