Napier's Bones
thingiverse
I am progressing my work on Youmagine, which can be viewed at https://www.youmagine.com/designs/napier-s-bones. However, I have decided to halt further development due to Makerbot (the owner of Thingiverse) filing patents for open source 3D printing community projects. This is an infringement of intellectual property rights. The current file will remain available, but future endeavors will be pursued elsewhere. For more information on this issue, visit http://www.openbeamusa.com/blog/2014/5/22/stay-classy-makerbot. Napier's bones are a mechanical calculator that assists students in understanding the relationship between single digit multiplication and addition tables; more info can be found at http://en.wikipedia.org/wiki/Napier's_bones.
With this file you will be able to print Napier's Bones with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Napier's Bones.