I found this calculator. I can’t find anything about it online, I’m guessing it’s from the 1970s, 1980s, or maybe later.
Submitted by EntertainmentQuick47 t3_ygw7vv in mildlyinteresting
Submitted by EntertainmentQuick47 t3_ygw7vv in mildlyinteresting
Viewing a single comment thread. View all comments