Joshua,
I read the book last night and found it very useful, especially in regards to hanging indents as it applies to poetry and to formatting table of contents. Very good advice.
The only area I'd disagree with you is on screen size. Here's an even simpler test than the method you described in your book --
- Make an image of a black line 10 pixels high and more than 600 pixels wide.
- View that image on the Kindle and do a screen capture.
- Load screen capture image into photoshop (or other image software) and check how wide the black line is now. (You will see that it is 525 pixels.)
- The same procedure is used determine the maximum height but with a black line taller than the maximum screen size.
Your method of testing can easily make you off by a pixel or two (i.e. the Kindle software doesn't expand the image that is one or two pixels off and thus no distortion to your image).