APF MARK 51 (Scientific Calculator)

The APF MARK 51 is a scientific calculator with 8 digits precision and algebraic logic. It has 17 functions, 19 keys, and a VFD (vacuum fluorescent) display. The power source is PP3 9V.

Facts at a glance:

Feature Value
Type: Scientific
Functions: 17
Keys: 19
Precision: 8
Logic: Algebraic
Display type: VFD
Length: 140mm
Width: 76mm
Power Source: PP3 9V
Year introduced: 1975
YearDiscontinued: 1975

See other calculators by APF