Is there any method for correcting for baro pressure?

I think it's a thousand feet per inch. So if the altimeter setting is 30.42,
that's half an inch difference, or five hundred feet. Add or subtract that
from the given reading. (High to low, look out below - so in this case you'd
read 500 feet lower than you are, so add) Should be good enough in an
emergency.

Test it before you need it.

Jose


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