Your eyes are the best light meter.
but if you don't have experience to know the light
your eyes are useless !
i shoot an awful lot of paper negatives on the fly
with a meter too ... but often times meters are wrong
because they measure some of the light, but not
the blue light which is what paper needs ... i imagine
dry platers wet platers knew different times of day, different "settings"
what to look for, and what to expose for and through their experience ( and others' as well )
they got good at reading the light ... just eyes sees " bright light and shadow" experience and eyes says
"the shadow would be about 20 seconds stopped way down 5 seconds open shadow 1 second bright light .. "
YMMV