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Re: [APD] CO2 drop checker

On Tue, 17 Oct 2006 20:25:10 +0100, S. Hieber <shieber at yahoo_com> wrote:

> I think Erik Olson made one of these or something like it a few years ago and wrote about it on TheKrib.com.

Funny how these devices have been hanging around for years and years, and now all of a sudden have become popular :)
Here's a link to a post from Kevin Conlin on the APD dated Tuesday, 6th February 1996...
And of course the commercial devices predate even that...

Andrew McLeod
thefish at theabyssalplain_freeserve.co.uk

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