DESIGN: Thermometer constructed of weather resistant and shatterproof materials for increased durability during use. | PRECISION MEASUREMENT: Factory calibrated to accurately measure temperatures from -60 degrees Fahrenheit to 120 degrees Fahrenheit (-50 to 50 degrees Celsius) | EASY TO USE: Bold black lettering with large numbers and a bright red pointer makes temperature readings easier. | MULTIFUNCTIONAL: 8-inch indoor outdoor thermometer walls are placed in greenhouses, warehouses, baby rooms, offices, laboratories, balconies, gardens, terraces, etc | TIPS: No batteries required. For the most accurate readings, place out of direct sunlight. | Bold and easy-to-read numbers track in 2-degree increments with the red design coordinated ABS pointer indicating temperature