The article describes the process of making the following site. Beautiful work.

> The Construction & Principal Uses of Mathematical Instruments

> Explore the digital edition of Edmund Stone’s 1758 translation of Nicolas Bion’s classic treatise covering everything from, sectors, squares, and compasses to land, water, and astronomical measurements featuring nearly 500 original illustrations restored and integrated into a modern design.

https://www.c82.net/math-instruments/

The section on number theory appears to be missing:

Carissan's https://cs.uwaterloo.ca/~shallit/Papers/cari2.html

Lehmer's http://ed-thelen.org/comp-hist/Lehmer-Factoring-Machines.htm...

It's rather hard to find good photographs of these machines; it would be wonderful to see them get such a nice treatment.

https://www.cantorsparadise.com/hunting-squares-c2ad824147aa has a good explanation of Lehmer factoring machines.

The poster on offer looks quite nice… https://www.c82.net/math-instruments/posters