Rockwell 30R (SLIDE RULE MEMORY)
The Rockwell 30R is an arithmetic calculator with 8 digits precision and algebraic logic. It has 10 functions, 24 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is PP3 9V. The calculator was manufactured in Mexico.
Facts at a glance:
|Power Source||PP3 9V|
If you have a Rockwell 30R 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: