Indoor and Outdoor Thermometer: Reads 4 inch diameter around the outside of thermometer is a trusted temperature and hygrometer (humidity measurement) to your outdoor space.Rugged shell, sturdy metal construction with true glass lens and a satin nickel finish.This wall thermometer implements the concept of green which, without batteries, energy saving, environmental protection. Easy to read: The outdoor thermometer decorative easily keep track of the temperature at a distance with bold black dial graphics. Celsius and Fahrenheit: This garden thermometer hygrometer simultaneous digital Celsius and Fahrenheit temperature display.This metal 4 inch analog patio is an excellent way to add classic style and temperature confidence to your outdoor space. Real Glass Lens: This indoor chamber thermometer real glass lens, accurate between 0-100% / - 15-50 C to accommodate all climates. Automatically Calibrate: This weather thermometer a precision coil thermometer makes accurate readings. 2 hours, the pointer will automatically match the local temperature.