In this follow-up Reddit post he discusses the fabrication techniques used for the acrylic circular slide rule shown in the lead photo. It’s always been possible to make your own slide rules ...

If designing and building manual mathematical machines is something that you think really adds up to a good time, check out this post on how to design and build your own circular slide rule!

Before there were apps for tablets and smartphones, before mathematics education software was easily installed on personal computers, before electronic calculators entered professional practice and ...