Enigma rotors

Here are the Enigma machine rotors in place with their cover removed. The code of the day specifies which set of four rotors (from a larger set) should be used and in what order they must be placed. The Enigma machine is completely symmetrical, so all that the message recipient needed to do was set their machine according to the same codebook and to type in the encoded message. The original message emerged, perhaps a little corrupted by human error and noise on the radio.

Done