Keep a backcountry resource center at your fingertips This tool has both a compass and thermometer with wind-chill chart. Double-duty instrument housed in a clear acrylic case contains a cushion-mounted compass and thermometer. Liquid-filled compass has luminous dial for easy reading after dark brass split-ring wont interfere with compass reading. Thermometer displays temperature in both Fahrenheit and Celsius. Wind-chill chart on back calculates temperature difference. Attach to your zipper or keyring for at-your-fingertips access.