<html> <body> At 06:40 AM 11/16/07, Paul wrote: <blockquote type=cite class=cite cite="">Are the sling style the ones one would whirl around your head on a string?  Richard had one of those, but accidently broke it in the shop years ago and hasmet had to be called in for the mercury clean up.  I wouldn't want those.  The Cooper looks interesting... </blockquote> Sling Psychs (wet & dry bulb) went out with the slide rule thanks to the mercury. Digital is the way to go. You'll be very surprised at what the humidity *really* is. <blockquote type=cite class=cite cite="">We do have extrememely dry conditions in the cold Nebraska winters, and very high humidity in summers; but the facilities across campus opens a steam duct system that goes to every building on campus, I don't think there is much adjusting that can be made.  It's either on or off.  Very old and antiquated.  We're working on getting a new building someday (pipe dream, of course ;>) </blockquote> My(!) building just installed a multi-million dollar HVAC system to complement the renovations to the main hall. The intake and outlet both have hygrometers in them and they generally read about 20% this time of year. Humidity in the pit averages about 7%, piano storage about 12% and even on stage it's rarely above 18%. The DC type hygrometer says 20% everywhere so something like the Cooper is necessary for accurate readings. <x-tab>        </x-tab><x-tab>         </x-tab>John . <x-sigsep></x-sigsep> <div align="center">------------------------------- John Musselwhite, RPT  -  Registered Piano Technician Musselwhite Piano Services - Calgary, Alberta Canada Office/cel (403) 246-7717 Fax (403) 255-5268 Outside of Calgary call Toll Free:  1-866-95-PIANO (1-866-957-4266) "Three Generations of Experience" </div> </body> </html>