Hmmm thinking some more on the home-made Brass divider project:

2 square sections of brass bar stock
1 section of the thicker brass plate stock ( quadrant)
Set screw to hold the fixed end of quadrant
Brass bolt, or thumbscrew to hold the moving leg to the quadrant...
Brass bolt to act as a "hinge" at the top.
2 hardened steel points....may use a couple of "scribe" pins from old combo squares.

Maybe a weekend , or two to complete? Depends on the cost of the parts....and how soon I can get to this.

Length of the "arms"? 6"? 8" or something else? Brass was chosen for it's ease to work with the few tools in my shop. It IS a woodshop, not a machine shop,after all.