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. Burnished brass gives it a rugged, gleaming appearance. Reads down to -20º 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.