Due to printer margins, outer page elements may not be printed when attempting to print a document at 100% scale. When one chooses the "fit" scaling option instead, Acrobat chooses a scale such that everything prints fines except for a small size reduction (assuming you're using the same paper format as the pdf). However, this scale seems arbitrary and varies for different pdf files, i.e. I had files where the scale was 97% and others where it was 94%. So my question is
Given identical paper size pdfs, why is the scaling of the fit-print option so different?