I'm looking for a throwaway airspeed indicator.  I'm trying to
get my cooling as optimized as I can, and need some "acceptably
reliable" data on the pressure drop from the plenum below the
engine to the exit above the engine.  It doesn't have to be all
that accurate, but since I'll hardly be using it after this
problem is solved, it has to be VERY affordable.
Anyone have an old beat up no account ASI? .... Jim S.