Original size: 1200 by 801 pixels
From CRI-8152
Side-by-side: the Lorenz SZ42 used in Germany-occupied territories and the reconstructed Tunny machine that decrypted the messages at Bletchley.
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More images from The Breaking of Lorenz
Side-by-side: the Lorenz SZ42 used in Germany-occupied territories and the reconstructed Tunny machine that decrypted the messages at Bletchley.