Historical review; various types of operating mechanisms; instructions for maintaining and testing signals; tables of operating characteristics of several signals: testing procedure; working diagrams are illustrated; list of 255 questions covering contents of pamphlet.


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    Titel :

    Semaphore signals


    Weitere Titelangaben:

    Am Ry Signaling Principles Practices



    Erscheinungsdatum :

    1930


    Format / Umfang :

    71 pages


    Anmerkungen:

    87 Figs.


    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




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