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murff
Joined: 27 Oct 2009 Posts: 594 Location: Switzerland
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Posted: Tue Oct 10, 2017 6:45 pm Post subject: A well docummented Curta |
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A well documented Curta
Today I got this Curta Type II with a LOT of documents...
Some of them are new for me and will be published soon.
The list:
- Kleine Zusammenstellung ueber Statistik
- Programme fuer die Berechnung von Wurzeln, Polynomen und Potenzreihen
- Klotoidenberechnung und Massenermittlungen mit der Curta-Rechenmaschine
- Curta Tabelle - Table (Contina)
- Contina bill and envelope
- Staffelwalze (Step drum) - study
- Quadratwurzel nach Toepler
- Quadratwurzel - notes about square roots
- Ein rekursives Verfahren zur Naeherung des Kreisumfangs
- Das Bestimmen von Naeherungsbruechen mit Hilfe der Curta-Rechenmaschine
- Vom Einsatz der Curta-Rechenmaschine im Mathematikunterricht eines Lehrerseminars
... and more
It would be great if you could post some of your rare and unusual documents! _________________ :: m u r f f
:: curta.li
Last edited by murff on Sun Oct 22, 2017 1:56 pm; edited 1 time in total |
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davhamm
Joined: 08 Nov 2015 Posts: 148 Location: Michigan
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Posted: Fri Oct 13, 2017 1:06 am Post subject: |
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Wow, impressive. Where did you find that stash? |
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murff
Joined: 27 Oct 2009 Posts: 594 Location: Switzerland
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murff
Joined: 27 Oct 2009 Posts: 594 Location: Switzerland
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Rubberswan
Joined: 19 Apr 2016 Posts: 27 Location: UK
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Posted: Sun Oct 22, 2017 3:16 pm Post subject: |
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It’s interesting to see that Contina were still repairing Curtas as late as April 1972. I wonder how long that continued.
I calculate that with a 1972 exchange rate of about 10 Swiss Francs to the pound Sterling, and inflation of somewhat more than a factor of 10, at today’s prices the repair cost about £50 - very reasonable! _________________ Curta 1 - 61153
Curta 2 - 508965 |
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