Right, as included in my first reply in this topic … No further comment.
True, changes to preferences are stored in the QCAD3.config file.
Perhaps you can (not) look that up in my first reply in this topic.
Default is 9px (times 1.7) … Try 8px (times 1.7) or try a different Ruler font.
In 2022 you disliked the same solution proposed by ryancousins and Husky. (post p38768 and post p38769)
How does your Graphics View look with GUI Scale factor 1.7 under QCAD 3.32.3?
Regards,
CVH