Thanks a lot, jackass !
Thanks to your woodworking post that included this website: https://woodgears.ca/
I discovered the Eyeballing Game. https://woodgears.ca/eyeball/index.html
You would think that someone who has spent his entire professional life judging distances, especially with portraits where a hundreth of an inch can destory a painting, I’d be better at this game. But, NO, I score in the four range. Back to the drawing board I guess ? !