Rockwell 31R (SLIDE RULE MEMORY)

The Rockwell 31R is an arithmetic calculator with 8 digits precision and algebraic logic. It has 10 functions, 24 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: 10
Keys: 24
Precision: 8
Logic: Algebraic
Display type: LED
Length: 155mm
Width: 76mm
Thickness: 23mm
Weight: 132g
Power Source: PP3 9V
Year introduced: 1975
YearDiscontinued: 1975

See other calculators by Rockwell