Hello Curta enthusiasts.

Here is a new concept to operate your favorite calculator, the CURTA Handbook.
It reveals hidden properties, transcends the best known such as the extraction of square roots or the calculation of the area of a polygon, but also the game of magic numbers, the golden ratio and others ...
Please,go to:
https://www.ebay.com/itm/CURTA-Calculator-The-HANDBOOK/373169063239?hash=item56e29c0547:g:MTUAAOSwI8VfRUxB

The Curta Hand Book by Astec Production / Bernard Stabile 2020

An important guide to help you maintain your understanding of all aspects of calculating with the Curta.
This collection of algorithms also helps to transfer old knowledge to the present day.





This well-designed Curta manual is a pleasure to use - and you will see a whole new side of your Curta calculator!






order now!

Thanks for the recommendation. I have ordered.

I did too. Funny there is a section on the pythagorean theorem - my youngest daughter was mentioning it in a recent discussion.

Once I received the manual, I think I'll send her to school with a Curta so she can demonstrate to her teacher how it's calculated

Thanks for the link,