It’s a generic Indian rolling mill. Several different companies make
the same basic mill. I had one at one point made by “Moon”. (From
?Mumbai?) Don’t expect any parts or manuals for it. That one looks
nicer than most of them, for what that’s worth.
Unless something’s broken, it’ll handle like any normal rolling
mill. What kind of a user guide were you looking for? I might be
tempted to take light bites with it. You’ll need to re-level the
rolls if you ever swap in any of the other rollers. I’ve got
step-by-step instructions for re-leveling the rolls on a much larger
(Durston) rolling mill on my website. It’s a bigger, fancier mill,
but the procedure is the same.