Hopefully you will be able to print it out and use some spray adhesive to glue it to a piece of posterboard. (to print it try saving the image to your desktop first!)
The nice thing about this scale is that it eliminates the step of having to draw a second line square to the base line. Simply put one side of the scale on the baseline so that the drilling location corresponds to the splay that you want and then make a mark up on the perpendicular scale next to the rake that you want and then connect the two marks. If need be, I can make another video.