3 in 1 Pressure Gauge Thermometer Hygrometer Barometer 72mm Wall Mount Built-in Weather Forecast StationFeatures:1. Aluminum alloy outer ring, eu standard movement, knob made of imported aluminum magnesium alloy, PMMA plastic lens, wheel adjustment, function screen, large display panel with dual scale weather change logo2. Comparing readings: The contrast pin on the lens is used to compare readings to see if the atmospheric pressure is increasing or decreasing over a period of time.3. Wide application: generally applicable to ships, factories, laboratories, families.4. Easy to Install: Lightweight and easy to install, suitable for hanging or placing on a surface.5. The product is used to measure temperature, humidity, atmospheric pressure and other parameters in the environment. It accurately forecasts future weather changes depending on changes in ambient temperature, humidity and atmospheric pressure. It is a full-featured household weather forecast meter6. Mechanical Thermometer Hygrometer Barometer, Without Battery RequiredParameter:Name: Barometer, Moisture Meter, ThermometerMaterial: Metal + PlasticMeasuring Range: 720-800hPa,-30°C-50°C,0-100%Resolution: 1C, 2%RH, 1hPaDiameter: About 72mm/2.83inThickness: About 33mm/1.3in.Deposition Diameter: 56mm/2.20in.Deposition Height: 20mm/0.79inPackage Included:1*Pressure Gauge1*Thermometer1*Hygrometer