[phoenix1963]

Originally Posted by bongodriver

The first versions of a standardised atmosphere model between nations was in the 1920's as far as I know, almost certainly those nations would have included the bulk of Europe.

Here check this NASA article....

http://ntrs.nasa.gov/archive/nasa/ca...2002153481.pdf

Thanks bongo, Always happy to be corrected by some evidence!

56RAF_phoenix

[EDIT] P.S. As is often the case with the English Internet, it's rather US centric. Have you got anything on British equivalents?