Misure blade graph paper

Hi,
i often see photos where the blade of an ML razor is positioned on a sort of graph paper in which there are all type of blade (5/8 6/8 7/8 ecc.) and decimal system too.
Anybody know where to download that sort of graphic graph paper?
Thanks a lot.

like this
https://www.dropbox.com/s/xdvufvrp0i...2013.06.40.jpg

Fabrizio

http://straightrazorpalace.com/razor...ml#post1013972

Post number 26. Plaudits to Razorguy. Just remember, when printing it off, make sure your scale is set at 100%!

thanks.
days i'm looking for....
newby i'm