APF MARK 22
The APF MARK 22 is a scientific calculator with 8 digits precision and algebraic logic. It has 17 functions, 19 keys, and a VFD (vacuum fluorescent) display. The power source is Sealed battery pack.
Facts at a glance:
| Feature | Value |
|---|---|
| Type | Scientific |
| Functions | 17 |
| Keys | 19 |
| Precision | 8 |
| Logic | Algebraic |
| Display type | VFD |
| Length | 159mm |
| Width | 76mm |
| Power Source | Sealed battery pack |
| Year introduced | 1977 |
Replacements:
If you have an APF MARK 22 that is no longer working, you can consider replacing the calculator with a modern equivalent.
We suggest the following current model as a replacement: