Those rulers are my favorites.
Deb Tucker's website is www.studio180design.net. You can see all her rulers and projects. Big gallery of ideas too. I am just finishing up a table mat with the ruler.
There are 2 different Hunter's Star rulers. The first one is the Petit Hunter's Star it will make sizes 5", 6", 7" and 8".
The regular Hunter's Star ruler does 7", 8", 9" and 10".