The American Naval Bombe N-530
Whereas the BTM Bombe only has 26 sense circuit per Diagonal Board the N-530 has 13 x 13 = 169 diodes each with 4 anodes = 676 diodes.
When one only Diagonal Board with 26 connection is available on a BTM bombe, the N-530 has the equivalent of 26 Diagonal Boards. The outputs of each are on 26way sockets into which can be plugged a printer cable. A selection of these as defined in the setup documentation can be printed for further analysis