Just went to check the mail and this was waiting for me.
(FIN)
I went in for a closer look
Bigger picture
The middle one (third from bottom and top),
IS FAULTY .
Silkscreen on 2.0mm to 1.4mm is faded. Also text "EEVBLOG.COM µRuler" text has jagged edges for the same reason. When I look really close with good light, I can see it looks like rasterized, with not enough ink. Maybe their machine ran low/out on white ink/silkscreening?
I don't actually care about this miniscule fault on mine, it just makes them unique. No need for replacements, just thought it would be good thing to report about this.
Also figured out why the rulers might be curved, only one side has red soldermask, Dave shipped these rulers so fast they didn't have time to dry out while kept straight. Now we have slightly curved rulers.
Thin "painted" things tend to curve to the side when paint dries. That's why if thin wood needs to be kept straight (diy projector screen), it needs to be painted both sides at same time before either one dries.