Advance Electronics RUBY 800
The Advance Electronics RUBY 800 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 6 functions, 20 keys, and a VFD (vacuum fluorescent) display. The calculator was manufactured in UK.
Facts at a glance:
If you have an Advance Electronics RUBY 800 that is no longer working, you can consider replacing the calculator with a modern equivalent. We suggest the following current models as possible replacements: