On Thu, 06 Feb 2020 16:21:22 -0000, Dave Liquorice wrote:

On Thu, 06 Feb 2020 14:49:36 -0000, Commander Kinsey wrote:

It would appear it should be corrected for altitude, but that would mean
a rotatable dial.

Or an adjustment screw on the back for an aneroid barometer or a
moveable linear scale on a mercury one. About 50 mb of adjustment
needed here.

Yes it could be easily done. Although.... should it be done? If you're at a higher altitude, you have lower pressure, but you also have more cloud. Clouds tend to hang around mountains.