APF MARK 52
The APF MARK 52 is a scientific calculator with 8 digits precision and algebraic logic. It has 17 functions, 19 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is PP3 9V.
Facts at a glance:
|Power Source||PP3 9V|
If you have an APF MARK 52 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 model as a replacement: