Article cites strides made in illumination standards for workshops, from 5 candles/sq ft up to present 25 to 50 ft candles; illumination factors in testing of flat surfaces by means of knife edge; use of magnifying glasses and binocular devices; lens aberrations encountered; role of microscope and telescope; optical aids in projection of form gages.


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    Title :

    Optical methods of inspection


    Additional title:

    Eng Inspection


    Published in:

    Publication date :

    1945


    Size :

    2 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :


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