Ann Arbor Optical Co. - Division of Data Optics, Inc.
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Ann Arbor Optical Co. manufactures the Model C Ronchi-type Optical Tester, excellent for viewing optical distortion and focal length variation in lenses, mirrors and optical windows. Also, Ronchi rulings and other patterns on glass, pinholes, slits, and microscope objective lenses are available. See Data Optics, Inc. for more information.
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