Reflector (left) and rotors (right) in situ in the cyclometer replica.

Note the locking lever is in its open position, pulled towards the front of the machine. This allows the reflector to disengage and slide to the left, as shown, to allow removal of the rotors.

 

Credit: Hal Evans

www.eng.cam.ac.uk/news/enigma-code-breaking-machine-rebui...

Done