The APF MARK 66r is an arithmetic calculator with 8 digits precision and algebraic logic. It has 7 functions, 29 keys, and a VFD (vacuum fluorescent) display. The power source is Sealed battery pack.

Facts at a glance:

Feature Value
Type: Arithmetic
Functions: 7
Keys: 29
Precision: 8
Logic: Algebraic
Display type: VFD
Length: 127mm
Width: 70mm
Power Source: Sealed battery pack
Year introduced: 1977

See other calculators by APF