Page 5 depicts the title page for the first chapter. On this page we can see the use of 4, maybe 3, different fonts. These are used to differentiate between the information being provided.
There is additional embellishment towards the top of the page, marking it as different to those which came before.
All the pages featured in the three spreads have incredibly wide margins and compactly printed text. Including the detailed drawing on page 46. One would assume that this is for the engineers for which the book is intended to write notes and additional information of their own.
Equations feature heavily as well and are clearly distinguishable from the surrounding text, due to the nature of their importance.