[Piotrsko]

For our needs: Unless youre using lab grade everything else $$$$, a lab grade baro is kinda like using a shotgun to kill flies in your house. Aanndd it doesn't have to move. All the other components of such a density device are correctable from other data points once you have a baseline. I would think the typical map pressure sensor dislocated would be accurate enough, there's also a knob on the altimeter to reset the altitude as appropriate. We are looking for changes here, not micro inch density accuracy at some point in the trip.