Keystone 2030 (Berkey Keystone 2030)

The Keystone 2030 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 7 functions, 24 keys, and a gas discharge display. The power source is Sealed battery pack.

Facts at a glance:

Feature Value
Type: Arithmetic
Functions: 7
Keys: 24
Precision: 8
Logic: Algebraic
Display type: Discharge
Length: 159mm
Width: 83mm
Thickness: 38mm
Power Source: Sealed battery pack
Year introduced: 1975

See other calculators by Keystone