When making dovetails the term 1:6 slope is used to set the angle of the tails. For most of you this a common term, for others not. Below are some pictures to simplify creating a 1:6 slope. In the first picture I taped down a piece of paper (a piece of plywood works fine to) and set my combination square to exactly 6”. In the next picture i take my pencil and trace it all the way around. The last picture shows how I use this diagram to set up my sliding bevel. From here I can use the sliding bevel to transfer this 1:6 onto any piece of wood like a drawer side.
I hope this helped somebody.
-- rhykenologist and plant grower