3 IN 1 Air Preure Gauge Thermometer Moisture Meter Barometer Hygrometer for Weather Forecast Weather Station Test Tools Set 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 preure rises or falls over a certain period of 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 preure and other parameters in the environment. It accurately predicts the future weather changes according to the changes of ambient temperature, humidity and atmospheric preure. 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,-30500-100% Resolution: 1C, 2% RH, 1hPa Diameter: about 72 mm/2.83in Thickne: about 33mm/1.3in Embedding diameter:56mm/2.20in Embedding height: 20mm/0.79in Package Included: 1 * Air preure gauge 1 * Thermometer 1 * Hygrometer