This should be able to print to your printer. Please consult Texerau's book Telescope Making for instructions on how to use this screen when Foucault testing your mirror. I plan to include more screens as I find time to do the drawings. The openings are designed to give readings on equal areas of the surface of the mirror. This mount works really well and just snaps into place.
Alignment is consistent from one observing session to another.
Any commercial reproduction must have express written permission from Edmund Stevens.