SLAKING THE EYE OF SCIENCE. BY C. H. CLAUDY. Elements of a onetwelfth inch microscopic objective (enlarged). How the elements of an anastigmat are centered. Photographs of a test chart made by a good and a poor photographic lens. T 0; 'hap a Glasses which are used for. testing an anastigmat lens. Using the test glass on an element of an anastigmat lens. Grinding photographic lenses by hand. Room for testing photographic objectives. IlL MAKING THE EYE OF SCIENCE., scientific american, -1909-06-05
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