The bigger, bolder version of our Therm-o-compass! Therm-o-compass 2 is 30% larger than the original, making it easier than ever to quickly read your direction or surrounding temperature. Attaches to your coat, pack, keychain, or wherever else you need it. Luminous, liquid-filled compass allows you to determine direction even in low light conditions. Reads down to -20º Fahrenheit (-30º Celsius) and includes a wind chill chart, making it a perfect compliment for camping and hiking gear. Solid brass split ring won't affect compass reading.