Links to the eBooks that have inspired me on this project
Escapement:
On Mark Headrick's Horology Page, Download his book, "Clock and Watch Escapement Mechanics,"
http://www.abbeyclock.com/escpdf.html
Project Gutenberg's An Analysis of the Lever Escapement, by H. R. Playtner
https://www.gutenberg.org/files/21978/21978-h/21978-h.htm
An excellent video on how to hand make a watch escapement hairspring:
And the book that inspired the video of the spring making:
http://www.watkinsr.id.au/blakey.html