[PSUBS-MAILIST] O2 And CO2 Guages

[Jake Colman <rocketjake@yahoo.com>]

I am looking for some inexpencive (not for my sub)
Carbon Dioxide and Oxygen meters/Guages. theese need
not be elaborate for, i am not trusting my life to
them. I am on the west coast but mail order is fine.
They are actulay for a science experement but i
figured you guys would know where to get them. I am
looking to spend not much more that 20$(U.S.)

Thanks

Jake C. 

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