Not wanting to hijack the other thread I thought I share a little bit of insight into my Jigboards.
Here's about as much as I'm willing to share. Every mark on this board is for a reason.. I also have a reference chart (covered) for all sizes of bridles I use as well as some critical marks for my Symphony bridles when I make those. and triangle charts for bowtie panel sizes.. Keeps me from having to reinvent the wheel every time I sew, sleeve or knot. I can tie, and also also do all my bridle measurements without the need for a ruler.
I also have a separate jig board. (still experimental) to tie French bridles from a single piece of line. There is a bit of doubling on those but still it was a personal challenge to do so.
So these two boards are used to create:
72" Bridles
83" Bridles
93" Bridles
97" Bridles
LE Sleeve
Sleeving Segments
2.2.4 Backsplice Marks
Bowtie panels for all sizes so far
Winder Templates