toys

[sid blum]

----- Original Message -----
From: "Ron Nossaman"

> I do carry a little Whatman hygrometer for logging temperature
> and RH% with tunings, and I've always wanted a simple way to check it's
> accuracy from time to time.

I use the wet/dry bulb device, not having found an electronic I wanted to
trust.  How accurate does this Whatman seem to be?  Can you suggest a
source?

thanks,

sb