I am investigating Java libraries that implement units support. I am intrigued by uomo as well as JScience 5.0. From what I can glean neither seems ready for production use. Is that an incorrect conclusion? I saw you touched on this some 7 months ago but was wondering what the current status is.
Perhaps you can't comment on JScience 5.0 though it seems you work with Jean Marie in some capacity. They mentioned in Dec 2011 an immanent release of JScience 5.0 but it was never released. Not sure how alive the project is.