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APF MARK 27

APF MARK 27
Image: Joe Haupt, CC BY-SA 2.0

The APF MARK 27 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 5 functions, 19 keys, and a VFD (vacuum fluorescent) display. The power source is PP3 9V. The calculator was manufactured in USA.

Facts at a glance:

FeatureValue
TypeArithmetic
Functions5
Keys19
Precision8
LogicAlgebraic
Display typeVFD
Length127mm
Width76mm
Power SourcePP3 9V
CountryUSA
Year introduced1973

Replacements:

If you have an APF MARK 27 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:

See other calculators by APF