huh... I had read it was the full width of the bolt, but having a "standard width" makes sense. You learn something everyday.
Well, yes and no....

For instance, in Lochcarron's old cataloges, before they went to weavign all of their heavy weight cloth in double width, they used to have some tartans available double and some single. Their double width, heavy weight cloth, was listed at 16 oz. Their single width, heavy weight cloth, was listed at 8 oz. But the cloth was the same weight. An in parenthesis, they put some kind of note explaining that 8 oz at 28" is the same as 16 oz at 54".

Then take Dalgleish -- their catalog lists 28" cloth at 16 oz, but again, they mean 8 oz at 28" wide.

So, I'd say *technically* weight should be given at the full width of the cloth, but for the sake of clarity, most people assume a 54" width regarless of how wide the cloth actually is.

Aye,
Matt