Slide rules are simple devices that can do some very complex
mathematical calculations. They put into use some of the theory
you learned about logarithms in high-school algebra. The Slide
Rule Museum has a template to make a model slide rule. I took
that and transformed it into a piece of functional jewelry. This
will be made entirely from paper/cardstock. Advanced crafters
can apply the same concept to wood and wood veneers, machined
metals, or formed plastics. Note that accuracy of the instrument
is limited to the medium, construction method, and skill of the
operator. Step #1: Next - This project illustrates creating a
large bangle. The prototype just turned out that size. You can
scale the PDF of the slide rule graphic to be smaller if you
want a thinner bangle or sized for a man's bracelet. - Download
the PDF to make a papercraft slide rule from the Slide Rule
Museum site. - Look for the "Scales to make a Mannheim Slide
Rule - K,A,B,L,C,D - Kinsman" and click on the image to access
the PDF in your browse