Hale’s elliptical compass
While hunting around for more background on Taguel's mould-breaking elliptical compass, I came across a long and detailed paper entitled "Elliptographs, and the Application of Elliptical Curves" by Frank J.…
A mysterious elliptical compass
There are some drawing instruments that seem almost designed to stand out from the crowd, be it aesthetically or as the result of a radical departure from established archetypes. One…
An unusual Napier compass
The Napier compass is a particularly compact form of multifunctional drawing instrument that became popular during the second half of the nineteenth century. It is commonly said to have been…