On May 24, 11:58*pm, Tina wrote:
Terry, I was thinking more of your chemistry background. Even here we
tend to measure, the the chemisty world, distances in meters. Well,
nanometers.

I really did not know aviation down under used English units, thanks
for the education. Are altimeters set in inches of Hg?

Tina, we are basically metric in Australia but as I understand it
feet are used worldwide for altitude in aviation. Our altimeter
subscales are in HPa ( although I still call them mbars). 1013.2 HPa
=29.92 in Hg. In the petrochemical industry where I work we use a
real mish mash of units. For pressure I am forever having to
interchange between KPa, mmHg (torr), psi and bars.
Terry