I just got my NanoVNA. Yep it's small.
I didn't realize how small it was until I really stared at the pictures. At first I was wondering how difficult it was to read the display due to the size but I frequently use my cellphone in excess of 80x25 text for ssh sessions, so I figured I'd have no problem reading the Nano, and sure enough it's big enough for me to not need a magnifying glass.
But I did notice that despite being able to read the text on it just fine, it is very tiring to look at it. Turns out that it's much easier to read with one eye closed because the display looks different depending on angle - just in landscape mode. In portrait mode, the display looks fine with both eyes and thus less tiring. I don't have this problem with my cellphone, just the NanoVNA -- because my cell phone has an IPS display where the NanoVNA uses the cheaper TN display.
Not here to bash on the cheap display, $50 is $50. But I have to seriously second that a firmware settable portrait mode be added, which unfortunately would probably be a major UI rewrite. I'm not sure how many people find looking at the display tiring or not, especially if one has to bring their eyes closer to the display due to size -- and this problem is worse the closer you are to the display.
Just my 2 cents, can't afford any more, else I'd have a Fieldfox :-)
