APF MARK 34
The APF MARK 34 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 11 functions, 29 keys, and a VFD (vacuum fluorescent) display. The power source is PP3 9V.
Facts at a glance:
|Power Source||PP3 9V|
If you have an APF MARK 34 that is no longer working, you can first try replacing the PP3 9V battery. If that doesn't solve the problem, then you can consider replacing the calculator with a modern equivalent. We suggest the following current models as possible replacements: