From what I can fathom, The ruler and measurements is determined by what International settings are selected. Apple has "standardized" these settings from international agreements? I would like to see the Canadian settings altered to allow for Imperial measurements within the Canadian settings on the iPad. In order to get Imperial on the ruler, I have to select United States International, but then the Dictionary is set to US and all the Canadian spellings are wrong. I would prefer to be able to select the Canadian international with either Imperial or metric settings as both measurements are still standard in Canada.