Hapco Mark II
The Hapco Mark II is an arithmetic calculator with algebraic logic. It has 4 functions, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is Sealed battery pack.
Facts at a glance:
|Power Source||Sealed battery pack|
If you have a Hapco Mark II that is no longer working, you can consider replacing the calculator with a modern equivalent. We suggest the following current models as possible replacements: