After watching Rob Cosman's video on his 3 1/2 minute dovetail, I am hooked. One device he used was called a 'dovetail marker' which I suppose has the 1:6 and/or 1:8 angle for marking the sides.
Does anyone have plans on how to make one?
The video was at:
http://blogs.popularwoodworking.com/editorsblog/
Thanks!
Rob