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Colex ESR

The Colex ESR is a scientific calculator with 8 digits precision and algebraic logic. It has 18 functions, 25 keys, and a VFD (vacuum fluorescent) display.

Facts at a glance:

FeatureValue
TypeScientific
Functions18
Keys25
Precision8
LogicAlgebraic
Display typeVFD
Year introduced1975

Replacements:

If you have a Colex ESR that is no longer working, you can consider replacing the calculator with a modern equivalent. We suggest the following current model as a replacement:

See other calculators by Colex