Sunday, September 7, 2008

Amazingly Cool: Mechanical calculator

This is something Dad, I'm sure, will really enjoy.

clipped from www.youtube.com
The Astounding Curta Mechanical Calculator
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1 comment:

Anast√°cio Soberbo said...

Hello, I like this blog.
Sorry not write more, but my English is not good.
A hug from Portugal