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Thread: Tone generator - GIF

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    Tone generator - GIF

    German tone generator from 1967.




    Previously:

    Maintaining telephone switches in the 1930s - photo
    1920s telephone lineman - photo
    Barbed wire telephone lines - photos

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    nova_robotics (Jun 22, 2021)

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    nova_robotics's Tools
    Amazing how far technology has progressed within living memory.

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