British signal equipment and line diagram symbols Western Desert 1940

Discussion in 'Weapons, Technology & Equipment' started by pamak, Jul 7, 2020.

  1. pamak

    pamak Junior Member

    Hello everybody,

    I was reading "Divisional Signals" from the free, online New Zealand WWII text collection (CORPS LINE COMMUNICATIONS TAKEN OVER BY NZ DETACHMENT — (WESTERN DESERT FORCE SIGNALS) ON ARRIVAL BAGGUSH, 10 JUNE 1940 | NZETC)

    In there, I found a line diagram showing the communications of the Western Desert Force in 1940 which I have attached in this post. My question is related to two symbols whose meaning is unclear since they are not included in the legend.

    The first symbol is a white arrowhead which is found at the end of some lines
    The second symbol is again a white arrowhead with a short straight line at the top. Screenshot (9859).png

    Does anybody know the meaning of those symbols?

    Thank you
  2. GeoffMNZ

    GeoffMNZ Well-Known Member

    As a retired Telecommunications engineer & 2NZEF researcher, your query intrigued me.
    The key to the diagram is in the legend "Fullerphone"
    This is a telegraph device used by the military. Uncle Google provides a link to the website "Wirelerss for the Warrior @ Wireless for the Warrior - The history of British Army radio
    There is an awesome amount of info on this site and a contact who I am sure will be able to answer your question. I should know and looked up some old textbooks but can not answer it at this time!
    Chris C likes this.
  3. pamak

    pamak Junior Member

    Thanks for the reply GeoffMNZ, but if you actually notice carefully, the symbol for the fuller phone is not any of the symbols which show a triangle

    The fullerphone symbol at least in this diagram is a short straight line perpendicular to the end of a line connection making the end look like a "T" . On the other hand, the symbols of my question are either a triangle of a triangle with a short line at its tip and they are omitted from the diagram's legend. See the attached image in my first post.
  4. pamak

    pamak Junior Member

    Here is the legend of the original line diagram

    Notice the absence of any symbol resembling a triangle

    Screen Shot 2020-07-07 at 4.38.09 PM.png
  5. GeoffMNZ

    GeoffMNZ Well-Known Member

    As I said, I am sure the website authors will be able to help you if you contact them as they are experts in Military Signals.
  6. pamak

    pamak Junior Member

    I sent an email:

    I will update this thread in the future to share any information I may receive
  7. pamak

    pamak Junior Member

    2020-07-08-0003.jpg 2020-07-08-0004.jpg Update:

    I got a very quick and helpful reply from the website author

    Here is the legend with the symbols from a pre-war manual

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