Europa-List: testing alti

[Paul Stewart <europa@pstewart.f2s.com>]

If I want to get some idea if my altimeters are reading anything like 
(or reading at all), could I do this by connecting the static line to  
a U tube manometer and generating the relevant -ve presure - (I found  
a chart of altitude vs pressure)?

Also I was envisaging doing the same for ASI but cant find any sort  
of reference re differential pressure vs airspeed.

Regards

Paul