BID/60, also called Singlet,[1] was a British encryption machine. It was used by the British intelligence services from around 1949 or 1950 onwards. The system is a rotor machine, and would appear to have used 10 rotors. There are some apparent similarities between this machine and the US / NATO KL-7 device.

Singlet
A Singlet machine on display at Bletchley Park
Typerotor machine
The rotor tube of a Singlet machine, with 10 windows and stepping levers (similar to those on a KL-7, suggesting 10 rotors.

In 2005, a Singlet machine was exhibited in the Enigma and Friends display at the Bletchley Park museum.

References

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  1. ^ Klaus Schmeh (2008). Codeknacker gegen Codemacher: die faszinierende Geschichte der Verschlüsselung; [Sachbuch]. W3l GmbH. pp. 116–. ISBN 978-3-937137-89-6.
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