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Three Engineers Rebuild WWII-Era Code-Breaker

The Tunny machine, the device used by Allied forces for decoding German High Command messages during World War II, has been rebuilt by engineers from the National Museum of Computing at Bletchley Park using old photos and diagrams.

The original Tunny machines were all destroyed and the original circuit diagrams were either hidden or completely destroyed. Rebuilding a copy of the Tunney machine took a team of three engineers nearly three years.

Needless to say, the rebuilding process was not easy for the engineers as none of the original components or circuit diagrams were available, and they relied on secondary materials to reverse engineer the machine.

John Whetter, the rebuilding project leader, revealed that the engineers referenced available pieces of odd circuit diagrams, images of the machine, and even statements made by some of the original builders.

"We are leaving [the Tunny machine] as a legacy and a tribute to those legends at Dollis Hill [Post Office Research Station] and Bletchley Park who never got the recognition they deserved," said Whetter, ZDnet (opens in new tab)reports.

The Tunny machine is on display near shortwave radios and other devices that were used in the WWII espionage effort.