>> > It's \unit[123]{\inchsign} long >> >> I don't think you want the resulting spacing between 123 and ''. > > Yes, you want it. It's good typography (at least in Germany). It were, if we had 123 m or something similar. But for 1'23", as for for 45\textdegree (or 45$^\circle$), I think the spacing is wrong. Alex