The Enigma machine worked reciprocally so that an identical machine with identical settings would, if fed the enciphered letters, show the deciphered letters on the lampboard. Hut 6 had Enigma replica machines that were logically identical to the machines that the Germans were using.
The Enigma machine operated reciprocally, meaning that an identical machine with identical settings would produce the deciphered letters if fed the encrypted message on its lampboard. Hut 6 had Enigma replicas that were logically identical to the machines used by the Germans.