I have an infrared thermometer. It doesn't register the same temp as one I suspend in the river. I think it is the diffrerence between surface temp and demp on the bottom of the stream.
I bought mine here:
http://www.thermoworks.com/products/ir/index.html
Harbor Freight also has them for $25.00 Looks like the same one that Theremoworks has:
http://search.harborfreight.com/cpis...ared&Submit=Go
Locate a store here:
http://www.harborfreight.com/cpi/ctaf/retail_stores.taf
This expensive Theremoworks Thermometer looks the same as this less expensive Harbor Freight Themometer.
Regards,
Silver
"Discovery consists of seeing what everybody has seen and thinking what nobody has thought"..........Szent-Gyorgy