roller mill

Hey there!

I was wondering if anyone knew of a place to buy roller mills?  I realize they are usually set up in succession to bring the particle size down.

And... maybe what I'm looking for could be done without that.  What I'm wanting to do is mill whole buckwheat flour, and not have large hulls left over.  I assume flour processed at Birtkett Mills is all done on roller mills, but don't know if there is maybe a way to process the whole buckwheat berry, hull and all, into a flour.

Ideas?

Thanks!