If it feels like an Alberti Cipher it is one!

[Vonologia]

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The easiest way to play with this is to copy You are not allowed to view links. Register or Login to view. four times, then cut out the circles and stack them up and stick a push pin in the middle and rotate. Although there are infinite angles on a circle, if this is just a drawing of an actual device, you can understand that one glyph off or a small math error would produce gibberish quickly. Think Antikythera mechanism.

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Actually, the easiest way is to take the high-res scan and isolate four wheels on different layers in a graphics program and spin it virtually, which I did long, long ago, but I also made a physical wheel for the simple reason that it was fun to have one. I used a paper clip to hold the center. If you put it in right, it allows the layers to spin but also creates enough pressure on the layers from the flat part of the paper clip that they stay together instead of wanting to separate.

Currently building an Illustrator file because it's the only way I can get the measurements correct. Have a blank one if you want to try. Have not encoded the glyphs yet because I don't have enough interpretation of the count per wheel. Guessing is still guessing. But those four wheels only need to reduce to two; a plain text version of 17 still in code, but known to the writer (assume 1 and 2), and three or four versions of another 17 (Wheels 3 and 4). The math on Wheels 3 and 4 are clean if you use 51 (Wheel 4) and 68 (Wheel 3; widely accepted with "errors").  Wheels 1 and 2 work well together, but only if you accept the number 17. Wheels 3 and 4 work well together in many more circumstances. Correlating the two working machines together...an additional puzzle. But honestly, if it is so, the encrypter would/might eventually want to read it back...hence the possibility of decryption.

And lets not forget the two, three or four missing disks between the Wheels. Possible as well.

Another test I want to try is to put/invert f57v in Overlay or Screen mode in Photoshop and load all the other "circles" in VMS.