[Lynx-lynx]

Below is a pic of a map in the intro section of the book (taken from the Kobo preview using the Kobo Desktop reader).

This map is described as: ' a graphic depiction of battlefield geometry for the artillery; a French canevas d'ensemble, showing trigonometrical points and directions reperes (bearings marked on terrain features and used by the artillery for picking up an accurate line of fire).'

Rkomar gee the book's expensive on Google. Try Kobo Aus it's only AUD4.99.

The other thing is, and this is what I do, once it's in Calibre I copy diagrams/maps into a Word doc, and then I manipulate them into the size and clarity I want and print them off. I've found that the best way to read say MacMillan's books and view the maps she refers to as I go.

Edit
Of course having a magnifying glass would help .... I know this is getting complicated, but then it's not unusual even for a published book to have to use a magnifying glass to view images or maps etc clearly. The best answer for viewing books with maps is to get a printed book of good dimensions though I suspect - ebooks just don't cut it, eh!!