Daltone Opti-Cal 1

The Daltone Opti-Cal 1 is an arithmetic calculator with algebraic logic. It has 5 functions, 20 keys, and a VFD (vacuum fluorescent) display. The power source is 4xAA.

Facts at a glance:

Feature Value
Type: Arithmetic
Functions: 5
Keys: 20
Logic: Algebraic
Display type: VFD
Length: 146mm
Width: 89mm
Power Source: 4xAA
Year introduced: 1973

See other calculators by Daltone