Depending on the size of the font, relative to page size, I will read them on a 300dpi kindle. Usually most manuals, especially those typewritten in the 1980s o

Depending on the size of the font, relative to page size, I will read them on a 300dpi kindle. Usually most manuals, especially those typewritten in the 1980s on letter-size pages, can be read this way. I will only read PDFs on a kindle in one-page-per-screen format. When the fonts turn out to be too small to read on the Kindle, I will read them on a monitor using the full height of the monitor to display a single page. If I want to closely study a few pages, and/or make notations on them, I might print them out on paper but only if there are no more than about 8 pages. I have been known to use a condensed print-out with 4 pages per A4 sheet of paper, but I dislike doing this because it makes the fonts too tiny to be comfortable.