Highgear 20028 TrailPilot 2 Compass with Thermometer 

Stay on track with this Trail Pilot 2 compass. Small enough to clip onto the outside of your pack and know your direction of travel and the temperature in a glance. The liquid-filled analog compass features six-degree graduations, making it ideal for guideline bearings. A Therma-Sensor near the clip reads temperatures down to a 0.1 resolution in Fahrenheit or Celsius.The High Gear Trail Pilot is compact enough to fit practically anywhere. 

Features: 

Air filled analog map compass with adjustable declination 
Digital thermometer, user selectable degrees F or degrees C display 
Working range -4 degrees F to +131 degrees F (-20 degrees C to +55 degrees C) 
Carabiner clip 
Consumer serviceable battery (1 SR1120W) 
Weight: 1.5oz (42.5g) 
Dimensions: 3-1/2" x 2-1/2" x 3/8" (8.9 x 6.4 x 1cm)