I was just in an email ‘conversation’ with someone when I mentioned my Curta mechanical calculator, and he responded “Pictures Please!” so here we are… Just in case you haven’t heard about this before ...

A mobile tool for carrying out simple mathematical equations, the Curta was the best pocket calculator until the advent of the electric calculator. Now, thanks to the 3D-printing prowess of Charlotte, ...

It is amazing how makers can accomplish so much when they put their mind to something. [Marcus Wu] has uploaded a mesmerizing video on how to build a 3D printed Curta Mechanical Calculator. After nine ...

This leaflet gives tables, formulae and rules for users of the CURTA calculating machine. Received with CURTA calculator 1982.0922.01. overall: .3 cm x 7.7 cm x 15.1 cm; 1/8 in x 3 1/32 in x 5 15/16 ...

I worked with a guy who found one of these at an estate sale in a box of used camera lenses. He didn't know what it was but it looked expensive and said "Made in Germany" so he figured it was worth ...