Keystone 395 (exponent 1)

The Keystone 395 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 8 functions, 22 keys, and a gas discharge display. The power source is 4xAA sealed.

Facts at a glance:

Feature Value
Type: Arithmetic
Functions: 8
Keys: 22
Precision: 8
Logic: Algebraic
Display type: Discharge
Length: 133mm
Width: 81mm
Power Source: 4xAA sealed
Year introduced: 1974
YearDiscontinued: 1974

See other calculators by Keystone