Printable protractor and ruler
Ok, so this is a 2d object for a postscript printer, instead of a 3d printer.
But we have rulers and protractors in the tool list, and there are those out there who may not be so endowed. So if you've got a printer, and no protractor, you now have no excuse.
I wrote this years ago when I was learning postscript, thought it would be useful here.