Zip-O-Gage
Zip-O-Gage, Sun Company Zip-O-Gage -- Since 1971, the Zip-o-gage has been the most trusted personal thermometer for the outdoors. Attaches to your coat, pack, keychain, or wherever else you need it. Reads down to -20 Fahrenheit and includes a wind chill chart. It's lightweight and small enough to take practically anywhere! The Zip-o-gage is the perfect addition to your camping, hiking, survival, and travel gear.