Accurately measure the temperature of your refrigerator or freezer in both Fahrenheit and Celsius. Easily mount with pressure-sensitive foam tape. Extremely versatile and can be used in any refrigerator, freezer or cooler. Stick Frig-o-gage in your fridge at home or at work, or even bring it with you on the go in your cooler or RV fridge. It's compact size (1.1 x 0.2 x 2.0 in.) allows you to place it in any spot you like. You won't even know it's there until you need it!