where to find printable focus charts? with stars, pinwheels and stuff?

[Texanite]

I know I used to have a site bookmarked which had a PDF or something that you could download. Anybody know of something that sounds like what I'm talking about?
Thanks

 

[Texanite]

I've found a couple, but these aren't the ones I'm remembering. The one I remember was like a full on chart complete with smaller pinwheels and really thin lines etc. Anyway, these are here in case anybody's interested:

http://www.mitcorp.com/public/articles.php?articleID=2

http://www.scribd.com/doc/266756/Camera-Focus-Test-Chart

http://www.bobatkins.com/photography/technical/lens_sharpness.html

 

[Texanite]

This may have been the one I was thinking of:

http://www.graphics.cornell.edu/~westin/misc/res-chart.html