Well, kind of. Most, if not all altimeters now, compensate for pressure
variations to show geometric (if that's the right term for it) altitude.

With SA disables in the GPS system, altitude is much more accurate than it
was. How accurate, I don't know. When I compare my altimeter with my GPS's,
they're usually about 100' apart. I'm not sure which is more accurate.

mike

"Stefan" wrote in message
. ..
Jim Macklin schrieb:
they give altitude, accurate to within a few feet. just set the
altimeter to read the same.

NO, dont' do this. The whole aviation system (airspace, separation...) is
based on pressure altitude, not geometric altitude.

Stefan