When you say "skip descriptions of illustrations", which do you mean?
--the captions under the actual illustrations (that say "Figure 1" etc)
--the references within the text, such as, "The side-pieces of the frame are, as will be noticed (see Fig. 3), eccentric,"
--the longer descriptions of illustrations where the text is describing some process through repeated references to the illustration, where the illustration has multiple letters on it and the text goes something like, "The water enters the system at A, then moves through B and C where it is filtered, then valve D opens and the bottle fills" (made this one up). There's an actual example in the text around page 49 where the text steps through the process of a cash register working, referring to a cutaway illustration above the paragraph (figure 1).
There isn't much of it in this book, but there's another Archibald Williams book that I thought about doing here, which is on the manufacturing processes with lots of walk-throughs of factory assembly lines and it's just chock-full of that kind of thing, and I wasn't sure how it's handled when recording audiobook versions...
No matter where you go, there you are. -- Buckaroo Banzai