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| 6AF6 minature octal magic eye tube. | |
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TUBES Marconi had vacuum tubes made for them under their own brand name. Here are some samples.
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| 6AF6 minature octal magic eye tube. | |
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| A more contemporary tube carton. (E-bay photo) |
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| This is a vintage 'Tube Tapper' advertising pencil from Marconi. The pencil is about 7" long. Tube tapping is a method of checking to see if tube elements are "microphonic", meaning the elements are loose. (Photos via E-Bay) |
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| Ink blotters, such as these, were used for advertising purposes. (E-bay photo) |
Oct 2/10