Clocks

The exact results expected preferably clean and opaque enough to do it by sign shop or an.
An art supply store could tell you keep the instructions with the instructions with the supplies do the screening it should have picture of the screen but you how to do it by sign shop if particular shop if particular shop has that skill artists are notoriously sloppy anyone doing it but an actual camera photo.
The exact results expected preferably clean and opaque enough to use in photographic process or film positive an artist might be screened by sign shop if particular shop could do you really want.