This looked like a handy little widget when I saw it, but I saw opportunities for changes, improvements I think. I wanted to be able to use it hands free so I fastened the assembly to the headstock of the lathe. Also wanted to be able to set inside and outside calipers against a wall, so I created two positions for the wedge to rest in. The first picture shows it recessed so internal calipers can be set against the walls. The second picture shows the other position where external calipers can be set against the walls. Finally I wanted a place to keep several calipers at hand, secure, and out of the shavings.
Dan is an experienced woodworker who is anxious to make an heirloom of the future for you.