The Monroe 20 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 5 functions, 18 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is 6x1.5V sealed.
Facts at a glance:
|Power Source||6x1.5V sealed|
You can download the Monroe 20 manual from the manuals website.
If you have a Monroe 20 that is no longer working, you can consider replacing the calculator with a modern equivalent.
We suggest the following current models as possible replacements: