So I figured I wanted the nose and mid/back ribs aligned where it called for such in the plans. I had predrilled the nose rib attach angles. I used these to match drill the spar. Now I wanted to use the spar to match drill the back rib attach angles. But how to align them and keep them aligned?
Again from from a simple mind come a simple answer.
Clamp the nose rib attach angle to the table with the spar side standing up. Here we have a (FR5) flap nose rib angle clamped to the table with a flap back rib angle in the background.