A pair of packages: nicefrac, which can "nicely" typeset fractions in the form "a/b" (i.e., on the line rather than directly one over the other); and units, which uses nicefrac in typesetting physical units.

Nicefrac's facilities are provided, in a cleaner way, by the (experimental) xfrac package.

See also siunits sistyle unitsdef.

The author is Axel Reichert.