I have just come into possession of this book. Over 70 sets of vehicle plans, in most cases a minimum of 4 views, and using a shading system to emphasise shape, this volume covers most of the major vehicle types of the 30s, through to 1948 (BA 27 to IS 7). A number of photographs (some of them new to me) are reproduced to round out the subject.
The plans come in a variety of scales, but since a list of conversion factors is also supplied there is no need to worry about the scale presented.
If you are interested in the history of Armoured Fighting Vehicles, and particularly as a modeller, then George Bradford's AFV Plans, whilst not a particularly good "read", are a must for your library.