Aristo 80123: the slide rule to have

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A slide rule designed by Aristo, a slide rule manufacturer, especially for Glenn L. Martin Company‘s engineers. This particular model was designed for calculations related to space travel and rocket engineering.

Some additional details about this model on this webpage.

Aristo 80123 Front

Aristo 80123 front

Aristo 80123 back

Aristo 80123 back

Aristo 80123 gutter view

Aristo 80123 gutter view

Korolyov and Von Braun

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Caption for Korolyov’s slide rule

The “magician’s wand”

Sergei Korolyov used this german-made slide rule to make quick calculations. To his colleagues, Korolyov’s slide rule was a “magician’s wand.” Today’s engineers and scientists use pocket calculators for this purpose.

Manufacturer: Albert Nestler A.G.”, Germany

Korolyovs slide rule

Korolyov's slide rule

Caption for Von Braun’s slide rule

An engineer’s tool

While a manager and public figure, Wernher von Braun stayed close to the work of engineering and design, using this slide rule for calculations.

Manufacturer: Albert Nestler A.G., Germany

Von Brauns slide rule

Von Braun's slide rule

According to Wikipedia article on slide rules:

German rocket scientist Wernher von Braun brought two 1930s vintage Nestler slide rules with him when he moved to the U.S. after World War II to work on the American space program. Throughout his life he never used any other pocket calculating devices; slide rules served him perfectly well for making quick estimates of rocket design parameters and other figures.

I find it an odd twist of fate that these two towering engineers used the same slide rule model.

What other calculators went into space?

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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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