Jawut went trough a few visual optimisation in order to make it readable at a very small size. Jawut has been specificall designed to printed in 4.5pt on HP5000 for the project Analog Information (post 1 and post 2)
The book ECAL Graphic Design showcased the Jawut typeface and printed it at 2pt – we had some feedback stating that it was (amazingly) still readable; grab a copy, be the judge and let me know.
* readability is defining the ease of reading a text trough its writing style; while legibility is the ease of reading the glyphs that compose a text.