I quite often need a separate ruler scale on each page of a multi-page document. The only way I know how to do this is to create a separate document for each drawing that requires a new scale.
I request that you add the ability to change the ruler scale on a per page basis within a single multi-page document.
I am using CDR X5 SP1.
I support this idea fully, both for Draw and Technical Designer.
The more so, as Draw and Technical Designer grow more and more together.