Sounds like a porket/corona flour mill. Does it have two discs (one rotating) which the grain is crushed between? Have a look around on the net for a few pictures to see if it's the same. If so a lot of people are using these mill and report good success.
for other than a small amount of specialty grain you need to check the spacing two-three times during a crush, don't produce too much flour
The Marga(sp) mill with its 3 rollers gives an excellent crush, run the grain though once at coarse setting, once again at a finer setting. Takes a while but is good as a cheap maltmill. In Adelaide try Gaganis Bros or Globe imports