I needed a simple angle finder, and didn't find one on here, so made this one! Each tick on the face represents 10 degrees
I recommend printing it out of PLA Tough/Plus/Pro, PETG, or ABS/ASA, as I'm not sure if basic or matte pla will hold up for the hinge part, when you snap it together.
The fit is meant to be a little tight/stiff, so when you set it, it stays.