Specification covers colorimetric and photometric requirements of all red, yellow, green and lunar white glasses used in connection with signaling on railways, including step lenses, molded semaphore glasses, cut semaphore spectacles and color filters for searchlight signals.


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    Title :

    British standard specification for colours for signal glasses for railway purposes


    Additional title:

    Brit Standards Instn -- Brit Standard Specification



    Publication date :

    1940


    Size :

    12 pages


    Type of media :

    Standard


    Type of material :

    Print


    Language :

    English


    Keywords :