Enigma A
Later 1924 lamp machine
A portable 23 × 27 × 13 cm machine with two cipher wheels, interleaved keys and lamps, and a separate advance key.
Later 19242 moving rotors · settable reflectorDemonstration cipher
Interactive 3D model
Tap a numbered wheel to set it. Advance before each letter, then tap a key or type A–Z. Demonstration wiring; original permutations are unknown.
Explore the machine
Set the two numbered wheels and lettered reflector, then advance once before pressing each letter. Open the case to follow the live circuit.
About this reconstruction
No surviving specimen or original wiring is known; case shape, materials and interior are reconstructed, and the working cipher uses synthetic wiring. The replaceable A–Z labels are exhibit choices; the adjustable reflector follows the later-1924 version.