Thanks for the compliment on my Project Telecaster website.
Actualy I found the tele headstock on
http://www.guitarbuild.com I used the headstock drawing my self for my tele project - it is very acurate.
On guitarbuild.com are lots of other guitar drawings available in autocad DXF format. I converted just this Tele headstock drawing 1:1 to PDF-format which is easier to read and print and made it downloadable from my site.