Standard air pressure is 29.92 in Hg or 1013.25Mb of pressure or 1 Bar.
I’m so glad somebody posted this question.
My brain is geared to Imperial measure, with the exception of small dimensions, where I’m finding millimeters and 10ths of that preferable to fractions of inches. I like metric bolts sizes better too. But, beyond 2 centimeters, my comprehension flies apart.
I’m trying to get hold of this stuff: inches of mercury and bars and millibars and atmospheres so let me see if I’ve got it right:
1. a bar is more than one thousand millibars (Bartender!)
2. one atmosphere is 1000 millibars
3. one atmosphere or 1000 millibars is just a smidgen shy of thirty inches mercury, or at least it used to be, but
4. a bar without Milli is a little bit more. (Or have I got it bass-ackwards?)
5.These are the atmospheric conditions of your average day at the beach, something only a French scientist could screw up.
My question follows.
Also the altimeter setting used while in flight levels.