Am 30.01.2010 10:28, schrieb Wolfgang Engelmann:
Is the package \unit for the correct setting of units (kg etc) build in in LyX or do I have to use ERT?
LyX supports this package. For a description have a look at the Math manual, appendix A "Typographic Advice".
I did not find it in the various menues You find them in the math toolbar under the fraction button. regards Uwe