As a practical matter this probably just means getting permission and giving them credit where appropriate. Contact the site if you need to reach one of the authors. This of course does not apply to the off site links. You're on your own for that. This program generates a .BMP file which can be printed and then photographed with slide film to make a Mosby Grating Test film.
Zip file includes the source file.
File size is 14,846 bytes. Here's a spreadsheet that others might find handy. It's in MS Excel format. I'd recommend adding it to the archive. Bob May's scale.zip One of my collection programs.