TechXplore: “Cambridge Engineering alumnus Hal Evans has built a fully-functioning replica of a 1930s Polish cyclometer—an electromechanical cryptologic device that was designed to assist in the decryption of German Enigma ciphertext. The replica currently resides in King’s College, Cambridge. Work on the hardware-based replica began in 2018, as part of Hal’s fourth year Master’s project under the supervision of King’s College Fellow and Senior Tutor Dr. Tim Flack. The aim was to investigate further into cryptologist Marian Rejewski’s cyclometer—an early forerunner to Cambridge University mathematician Alan Turing’s machine, known as the Bombe, which was used to crack the German Enigma code during the Second World War…”