Ford has beaten General Motors for the first time in nearly a century, in terms of number of US factory workers. Ford has 50,703 to GM's 50,300 or so.
Answers. Well, the simplest answer is that the astrolabe pretty well had to be used at night and could not be used in bad weather. The compass, which relys on the magnetic field of the Earth rather than a visualiztion of the stars, works at any time, and in any weather.
What are the limitations of CT Colonography? A person who is very large may not fit into the opening of a conventional CT scanner or may be over the weight limitâusually 450 poundsâfor the moving table. For very large patients, some facilities have extra-large bariatric-capable CT scanners. If this is necessary, contact your doctor for more information.