Tektronix 7000 Series Mainframes

Tektronix is my favorite scope manufacturer. I like the performance of their scopes and the engineering craftmanship behind it. As I’m a hobbyist in an “ex Eastern Block” country, my contact to Tek scopes is thru second hand ones. And they still work !
This book emphasises the art of building these high performace and resilient products. The picture gallery is the most important feature in this book/ bring closer to one’s eyes the ingeniosity of the Tek engineers.
The scopes are, most of them, still serviceable today, as mentioned in the book snd confirmed by myself.
The book is a “must have” for any Tek, or in a wider sense any “analog” electronix passionate.
A comment on the format/ Sales channel: it’s a pitty that the download is no longer available; I downloaded some other books from the same author quite some time ago, it’s practical for a wuick search or lecture when you travel and don’t want to carry a heavy item with you.And I still bought the paper format one because of the brillint pictures on paper.
So I think both formats should be available!