Nice looking wood square Rick.
I made one in HS shop class. It's 54 years old right about now. It never did quit moving, so one day it was good, the next. not so much. I tried to use it for real work back in 1971, but it just lacked even against a POS square from the lumber yard. As I picked up better tools, I found a big clunky machinist square that is dead nutz, and it hasn't budged a bit since I bought it. At my last shop I had it hanging on the wall, since we moved 12 years ago, not sure which box it's stuffed in now, but some day it will pop up. For my square at the tool, for just end cuts, I mostly use those plastic squares you see everywhere. If a person couldn't afford a great machine square at each machine, they are pretty darn accurate, and that plastic of the heavier class stays stable, unless you get it too close to the heat gun. DAMHIKT.