Today I stopped at the hardware store and picked up a cheap Ace brand steel square graduated in 1/8ths. I took a small piece of plywood with a factory edge to test them, the first one failed but the second was right on.
I guess it will do for now, and I don't mind trading the weight for a little extra durability. I keep a couple of 18" pieces of Aluminum angle for winding sticks, so I only need one square for winding.
Thanks for the help!
