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APF MARK 31

The APF MARK 31 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 9 functions, 27 keys and a VFD (vacuum fluorescent) display. The power source is PP3 9V.

Facts at a glance:

Type Arithmetic
Functions 9
Keys 27
Precision 8
Logic Algebraic
Display type VFD
Display size
Printer
Length 140 mm
Width 76 mm
Thickness unknown mm
Weight unknown g
Power Source PP3 9V
Country
Original price unknown
Est. current value unknown
Year introduced 1976
Year discontinued

See other calculators manufactured by APF.