As you probably all know, horizontal strokes appear wider than vertical strokes of the same width, which is why fixed-stroke-width fonts usually compensate for this illusion by having their vertical strokes a bit wider.
Hebrew fonts are no exception: if you check out notable sans serif fonts such as Narkis Tam
, you'll note that vertical strokes are indeed wider.
I'm working on a rounded, fixed-stroke-width Hebrew typeface (working title: Amigo), and after conducting a few experiments, I've come to a conclusion that in Hebrew, truly fixed stroke width works pretty good, probably because Hebrew is "reverse contrast" in its nature, that is, in traditional Hebrew fonts
the horizontal strokes are the wider ones.
Check out Amigo (a work in progress):