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Keystone 98

The Keystone 98 is an arithmetic calculator with unknown digits precision and algebraic logic. It has an unknown number of functions, unknown keys and a VFD (vacuum fluorescent) display. The power source is Sealed battery pack.

Facts at a glance:

Type Arithmetic
Functions unknown
Keys unknown
Precision unknown
Logic Algebraic
Display type VFD
Display size
Length 133 mm
Width 81 mm
Thickness unknown mm
Weight unknown g
Power Source Sealed battery pack
Original price unknown
Est. current value unknown
Year introduced 1974
Year discontinued

See other calculators manufactured by Keystone.