DW> It's not a very easy instrument to make.

thanks for the description... it helps the visualization...

 DW> Do you *really* need to know the atmospheric
 DW> humidity more accurately than would be shown
 DW> by a cheap hygrometer using something like a
 DW> hair?

i can't tie a cheap hygrometer using a hair to a computer ;)

once i get things tied to a computer, i can then make a webpage with the
data showing current conditions... it may be possible to sell similar stuff
and thus make some money with my spare time... nah... that's too much like
work! i'd just like to have something for myself to make webpages with and
to satisfy my own personal curiousity...

)\/(ark