RES Mark IX
The RES Mark IX is an arithmetic calculator with 8 digits precision and algebraic logic. It has 7 functions, 20 keys, and a VFD (vacuum fluorescent) display. The power source is Sealed battery pack. Note: Regan Industries RA900P
Facts at a glance:
|Power Source||Sealed battery pack|
If you have a RES Mark IX that is no longer working, you can consider replacing the calculator with a modern equivalent.
We suggest the following current models as possible replacements: