What was a Polish Enigma double?

A Polish Enigma double was a replica of the German Enigma machine produced by the Polish Biuro Szyfrów. This replication was made possible by Marian Rejewski's achievement in determining the secret internal wirings of the Enigma's rotors and reflectors.

What we know

• A Polish Enigma double was a machine produced by the Polish Biuro Szyfrów that replicated the German Enigma machine. [2]
• The creation of the Enigma double resulted from Marian Rejewski's work in determining the internal wirings of Enigma's rotors and reflectors. [2]
• The Wikidata entity for the Polish Enigma doubles provides the description as a replication of the Enigma machine. [1]

Where to go next

• whoWho was Marian Rejewski?
• how it workedHow did the Biuro Szyfrów operate?
• the bigger pictureWhat is an outline of general machines?
• compared withWhat was the puzzle video game Enigma?
• an unexpected connectionWho was Brinley Newton-John?

Sources

• [1]Polish Enigma doubles (Wikidata Q7209900) · CC0 1.0
• [2]Polish Enigma double · CC BY-SA 4.0
• [3]Outline of machines · CC BY-SA 4.0
• [4]Enigma (2002 video game) · CC BY-SA 4.0
• [5]Brinley Newton-John · CC BY-SA 4.0