Armored Core is series of mecha-based video games developed by From Software, for various gaming platforms.
The first part of the book is like a visual companion for the game. You'll see the mechas featured and writeup on their organization. The mechas have all their parts separated for individual analysis. There's quite a significant amount of writeup.
The second half of the book has the design sketches. They look like those engineering type of drawings, very intricate and looks good. The commentary here focuses on the design concepts. There are designs all the way from the head to the leg, including the arm unit which is the weapon. There are lots of different parts to see.
Armored Core fans will probably like this book. Artists who are looking for inspiration on designing mechas should also find this book useful.
If you buy from the link, I get a little commission that helps me get more books to feature.