Measuring performance - suggestions, ideas, comments?

[bobgroh]

I would certainly like to do some performance measurement on my as-yet undone upgrade on my Shopsmith DC-3300.  Measuring motor current is no problemo. But I would love to measure airflow in a reasonably accurate and consistent fashion using inexpensive instruments. Rockler just put out a video showing measurements being taken on the new Laguna CFlux1 (the video is on YouTube):
https://www.youtube.com/watch?v=eFJnGHEMicI

(put a link in but don't know if it will stay put - if not, just go to YouTube and for Laguna CFLUX1)
which shows the gentleman measuring flow and velocity using a probe (hotwire anemometer??) in  a long tube connected to the intake.  That looks very do-able IF there is a low cost air speed meter available.

So any ideas, suggestions, etc??  Thanks

Bob Groh