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Re: Color temperature reference

Jim Erikson wrote:
>I cannot verify the color temperature of the B&W monitors we have available in
>house, and am intent instead on locating a device I have heard called a
>"comparator."  I understand that this device is simply a card and separate
>light source enclosed in a box with an eyepiece.  
Could this possibly be a Graficon (spelling?) Optical Compartor? Gppd luck
finding one that has an accurate reference card.  Most old ones I've seen
have changed color (usually somewhat green).
Craig Nichols