Calfax 616

Calfax 616
Image: used with permission
The Calfax 616 is an arithmetic calculator with 6 digits precision and RPN (reverse polish notation) logic. It has 4 functions, 16 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is PP3 9V.

Facts at a glance:

Feature Value
Type: Arithmetic
Functions: 4
Keys: 16
Precision: 6
Logic: RPN
Display type: LED
Length: 127mm
Width: 73mm
Thickness: 25mm
Power Source: PP3 9V
Year introduced: 1975

See other calculators by Calfax