Portex
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Portex (or BID/50/1) was a British cipher machine. A rotor machine, the device used eight rotors each with a tyre ring and an insert. The machine was used mainly by the secret services from the late 1940s to the early 1950s.
[edit] See also
[edit] References
- Information card, Bletchley Park Enigma and Friends exhibit, put together by David White and John Alexander, October 2005 [1].
[edit] External links
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![[1]](http://commons.wikimedia.org/wiki/Image:Bletchley_Park_Portex_IMG_3611.JPG){kind=link}