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Satolex Calcu-pen

The Satolex Calcu-pen is an arithmetic calculator with unknown digits precision and algebraic logic. It has 4 functions, 5 keys and an LED (light-emitting diode) display, typical of calculators of this era. The power source is 1.5V LR1 mercury cell. The calculator was manufactured in Japan.

The original 1975 LED Calcu-pen must have seemed like something out of a science fiction film when it first became available. Each key is in fact a rocker that has four different functions to save space. The Calcu-pen was packaged in the same way as a quality fountain pen or ball-point pen and supplied in a plastic case with a spare ink refill.

Facts at a glance:

Type Arithmetic
Functions 4
Keys 5
Precision unknown
Logic Algebraic
Display type LED
Display size
Printer
Length unknown mm
Width unknown mm
Thickness unknown mm
Weight unknown g
Power Source 1.5V LR1 mercury cell
Country Japan
Original price unknown
Est. current value unknown
Year introduced 1975
Year discontinued

See other calculators manufactured by Satolex.