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Daltone Opti-Cal 1

The Daltone Opti-Cal 1 is an arithmetic calculator with algebraic logic. It has 5 functions, 20 keys, and a VFD (vacuum fluorescent) display. The power source is 4xAA.

Facts at a glance:

FeatureValue
TypeArithmetic
Functions5
Keys20
LogicAlgebraic
Display typeVFD
Length146mm
Width89mm
Power Source4xAA
Year introduced1973

Replacements:

If you have a Daltone Opti-Cal 1 that is no longer working, you can first try replacing the 4xAA 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:

See other calculators by Daltone