Well, I thought I had exhausted the list with the HP-35, HP-65, HP-41, HP-48 and Elektronika Mk-52. I was mistaken. Before even the HP-35, the Pickett N600-ES model travelled to the moon five times. One unit was even brought on the surface of the moon by Buzz Aldrin (here’s a virtual N600-ES).

Now I have to find what other slide rule models went in space, possibly with Mercury and Gemini missions, certainly with several russian missions. I will also have to dig into the European (French), Japanese and Chinese space programs for other possible electronic calculators.

Apollo XI - is there a slide rule in this picture?

Apollo XI - is there a slide rule in this picture?

Pickett N600-ES

Pickett N600-ES

Pickett N600-ES

Pickett N600-ES

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