Response to (OT)Accurate color thermometer recommendation

I did some quick research on this topic a while back and was dismayed to find that thermometer manufacturers don't have much to say about accuracy. Even though you buy something with great resolution, it may or may not have good absolute accuracy. I don't want to use a glass (esp. mercury) thermometer in the darkroom, but I keep a good one stored away as my reference to check all my other ones. Some claim that absolute accuracy isn't necessary- I disagree. Let's say you have a perfectly functioning zone system, but your thermometer is 3 degrees off and you don't know it. You break it. Goodbye perfectly functioning zone system until you recalibrate. If you know your errors, you just get another thermometer, calibrate it, and it's business as usual. Just an example- zone isn't my thing, but measurements are. BTW, check out Fisher Scientific- model 15-000A for about $23.50 (last year). It's -1 to 51 degrees C with 0.1 degree resolution. Glass- use only as a reference tool.

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