Finding the Relative Pins and Lugs settings
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[Excerpts from TICOM I-175 (interview of Alfred Pokorn)]

This consists in setting, on every wheel, the pins in the correct sequel
of active or inactive positions, but without beginning the sequel at the
correct spot of the circumference of the wheel. E.g.

    Letters on the wheel:       A B C D E F G H I J K ...
    Absolute correct sequence:  + + - + - - - + - + + ...
    Relative correct sequence:  - + + + - + - - - + - ...

There is but one way of setting the lugs on the drum bars. This, and the
setting of the pins, makes the internal setting of the converter.

The clear text of a broken message and the cipher text of the same, are 
written one under the other, to show over how many letter-spaces the printing
wheel turned before printing every cipher letter. As Z and A are, on the 
printing wheel, side by side, clear A would result in cipher Z by the space O, 
{the author named the space, the Key ("K"), which is part of the KeyStream}, 
in cipher A by the space 1, in cipher B by the space 2, etc.

Clear B would result in cypher Y by the space 0, in cypher Z by the space 1,
in cypher A by the space 2, etc. E.G.

            Clear:    R  E  Z  Y  O  U  R
            Cipher:   E  V  D  D  C  P  S

            Spaces:  23  0  5  2 17 10 10

This gives a sequel of spaces in the length of the broken message.

The sequel is written in six tables, with 17,19,21,23,25 and 26 numbers
respectively, written in one line. Every table indicates the wheel corresponding
to the breadth of the case. E.g.

Wheel 17:   23  0  5  2 17 10 10 21  8 20 11 15  7 12 25  0  5
            25  6  2  3 22  8  9 20  2 25  5 25  3 17 21  9  6
            20  9  8  0 25  4  4

The spaces showing in one column (one under the other) have been produced with
the wheel being in a certain position, identical for all the spaces in that
column. From the spaces in a column being large or small. it can be said
whether the pin in that position of the wheel must have been active or inactive.
Active pins have contributed to make the space large. Small spaces in one column
show that the wheel must have been inactive in that position. The sequel of pin
positions for the wheel above would be:

             +  -  -  -  +  -  -  +  -  +  -  +  -  ?  +  -  -

By comparing the different wheels, sequels of pin positions, though incomplete,
can be made up for most of the wheels.

By continued comparing and correcting the sequels, they can be made complete.
By comparing them with the turns made by the printing wheel to produce every
cipher letter, moreover, the working of the drum bars, and the positions of the
lugs on them, can be deduced.

The result is the complete, though relative, internal setting of the converter.
Before deciphering of other messages with the same internal settings, the 
absolute internal setting has to be found.