This book is published in both German and Latin. The typography was easy to read, and is essentially a photographic facsimile of an earlier copy from 80 or 90 years ago. A photographic facsimile means they used real cameras with lenses to duplicate the images. I doubt any OCR (optical character resolution) was used in preparing this work.
Now, if you haven't already studied both German and Latin, I assure you, you are definitely going to have difficulties reading this, but since I am a native English speaker who has already put in several years of my life studying these languages, it didn't present me any difficulties at all. Be careful of what you buy through mail order. Speaking for myself, it is exactly what I wanted. It may not be of any practical use to people who haven't studied German or Latin.