APF MARK 65r
The APF MARK 65r is an arithmetic calculator with 8 digits precision and algebraic logic. It has 6 functions, 24 keys, and a VFD (vacuum fluorescent) display. The power source is 2xAAA sealed.
Facts at a glance:
| Feature | Value |
|---|---|
| Type | Arithmetic |
| Functions | 6 |
| Keys | 24 |
| Precision | 8 |
| Logic | Algebraic |
| Display type | VFD |
| Length | 125mm |
| Width | 74mm |
| Thickness | 26mm |
| Power Source | 2xAAA sealed |
| Year introduced | 1977 |
| Year discontinued | 1977 |
Replacements:
If you have an APF MARK 65r that is no longer working, you can first try replacing the 2xAAA sealed batteries. 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: