BernzOmatic O2 Flowmeter

I have the standard oxygen setup available from any of the major homebrew stores - it hooks to the red bernzOmatic O2 cylinders from the hardware store. I was wondering if anyone had been successful in finding a flow meter that worked with this setup or if anyone had any cheap way to upgrade to an O2 system that included a flow meter? Thanks.

I went to a welding shop and picked up an o2 cylinder there and bought a $40 regulator at harbor freight. Can’t remember exactly how much the o2 was but they had different prices for different size tanks and the refills were cheap.

Anyone have any thoughts or experience with using one of these:

http://www.omega.com/ppt/pptsc.asp?ref=FL2000

in conjunction with a little red cannister?

I would ask the manufacurer first.  Does Acrylic do well in an O2 atmosphere?