Didja ever notice that no matter where you are in your home, it's always
room temperature.  This thread is nearing the edge.  Just how important is
it to know exactly what the temperature is just outside your van.  If you
stick your pinkie or something out the wind wing you can probably guess that
temp for all reasonably practical purposes.  Or you could get a Navajo
weather stone.

pensioner (owns navajo weather stone, works fine, every time, no current
draw, multi purpose, works daylight or dark, recyclable)

PS: Did we ever settle the contact patch questions?