[Greenbuilding] infrared thermometer

[John Straube]

Emissivity of glass is about 0.84, which is not far off a unit with a default of 0.90, like within a degree or two.

On 2011-03-02, at 9:11 AM, Sacie Lambertson wrote:

> Thanks to Rob T's suggestion some years ago, I have a very good infrared gun, the name of which I can give you when I return to my area tomorrow.  At the time it was supposed to be a real deal; but it isn't a cheap toy--cost $300 as I recall.  And I think the glass values it registers are correct, though these are of little interest to me.
> 
> Sacie
> 
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Dr John Straube, P.Eng.
Associate Professor
University of Waterloo
Dept of Civil Eng. & School of Architecture
www.buildingscience.com