I have an Adjusto Jig. No, it's NOT for sale.
It's a great tool for building wing panels. It will handle up to a 36" wing panel. Or, you can lock the center straight and build a single panel 72" long. Then take it off and build another one. You could theoretically build a wing 144" long.
If your just building a small wing--like 72" or smaller, then you just build both panels at once and then unlock the center section and drop it down however much you need for the dihedral brace. You can actually glue the dihedral brace in while the wing is on the jig. Perfectly straight wing with just the right amount of dihedral.
It does take time to set it up and drill all the ribs, but once you get all the ribs set and set all the spacing, you can literally glue a wing together in about 20 minutes. You can turn it upside down or on it's end. Whatever you need. Getting the ribs drilled and set the right distance apart is the most tedious part. Once the ribs are srt--just slpa the sticks on and start droping CA everywhere. It's easy and builds a perfect wing every time.
The wing in my pics is one panel from a 4*120. These panels are 41.5" long.