Hi, Michael Swan said that we can say "a half hour, a half kilo". Is the same thing with " a half pound, a half cup of tea, a half loaf of bread, a half sheet of paper, a half metre of cloth, ..."?
Yes, Ahmed, all of those are OK. Some people write such expressions with a hyphen: "a half-hour," "a half-loaf of bread." The construction in which "half" precedes the indefinite article is often preferred: "half an hour," "half a cup of tea," "half a loaf of bread," "half a sheet of paper," "half a meter of cloth."