After expanding the Qualettee family, I wondered if the thinnest member could be used to build a sans-serif family with low contrast that would work better than Qualettee for blocks of text. The result is a ten font family that I named Kwalett. It inherits the large x-height from Qualettee.
The picture below shows Kwalett at the top and Yassitf, another sans-serif face that works well for text, below. Kwalett was printed at 35 points and Yassitf at 33 and then both enlarged.Below shows the difference between Kwalett and Qualettee. Most letters have a similar shape, but the differences in contrast make them easy to differentiate.
Kwalett is available from myfonts.