3 IN 1 Air Pressure Gauge Thermometer Hygrometer Barometer 72mm for Wall Mount Embedded Weather Forecast Station Features: 1.Alloy aluminum outer ring, EU standard movement, the dial made of imported aluminum magnesium alloy, PMMA plastic lens, adjusting wheel, multi-function display, large display panel with dual-scale weather change logo 2.Readings Comparison: The contrast pin on the lens is used to compare readings to see if atmospheric pressure rises or falls over a certain period of for time. 3.Wide Applicability: Generally applicable to ships, factories, laboratories, families. 4.Easy to Install : lightweight and easy to install, suitable for hanging or placed on a surface. 5.The product is used to measure the temperature, humidity, atmospheric pressure and other parameters in the environment. It accurately predicts the future weather changes according to the changes of ambient temperature, humidity and atmospheric pressure. It is a full-featured household weather forecast meter 6.Mechanical thermometer hygrometer Barometer, no battery required Parameter: Name: Barometer,Moisture meter, Thermometer Material: metal+plastic Measuring range: 720-800hPa,-3050,0- Resolution: 1C, 2% RH, 1hPa Diameter: about 72 mm/2.83in Thickness: about 33mm/1.3in Embedding diameter:56mm/2.20in Embedding height: 20mm/0.79in Package Included: 1 * Air pressure gauge 1 * Thermometer 1 * Hygrometer