I decided to install some adjustable shelving in the linen closet and was surprized at how wanky the walls were. I made this jig out of scrap and it saved me a lot of walking up and down the stairs and possibly a lot of missed cuts. Every shelf fit great. I wish I had of thought of this when I re-treaded my staircase which resulted in a mass amount of back and forth to the garage. Hope you find the idea useful.
shelf jig in use.jpg