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Description of the Preferred Embodiment

From IMAGE COLORIMETER: “This invention generally relates to colorimeters, and more particularly to a colorimeter for measuring color and spectrum distribution, based on the formation of an optical image for an object prior to measurement.” The illustration is of “a sectional view of a third embodiment of the invention, which illustrates the components at the front-end of an instrument adapted to make color measurements of soft or loose material.” Filed April 4, 1974.