This reminded me of work to get the C64 to do 80 columns in software, using a 3x7 pixel grid (with one row and column used for spacing), some of which were part of commercial products.
> Creating a 4×8 character set that is both readable and looks good is not easy. There has to be a one-pixel gap between characters, so characters can effectively only be 3 pixels wide. For characters like “M” and “N”, this is a challenge.
https://www.pagetable.com/?p=901
> Creating a 4×8 character set that is both readable and looks good is not easy. There has to be a one-pixel gap between characters, so characters can effectively only be 3 pixels wide. For characters like “M” and “N”, this is a challenge.