Brangdon,
The thermometer is of minimal utility. Mostly I like the shape and size of the Suunto Comet. The thermometer is an extra bonus. It does have a wind-chill chart on the back. I am not sure how I would know what the wind speed is. I carry it in my watch pocket and it always says 90 degrees. It has a great size, shape, and declination scale that works. I went to our local mall Knife Shop and bought a Suunto Clipper with glow in the dark dial and bezel and put that in it. I don’t think a thermometer has survival value. I use the Cody Lundin test for hypothermia: if you can’t touch your little finger to your thumb - you are in trouble.
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Thermo-regulate, hydrate and communicate.