In 1 Barometer Thermometer Hygrometer Barometer 72mm for Wall Mounted Built-in Weather Forecast Station Features: 1. Aluminum alloy outer ring, EU standard movement, imported aluminum magnesium alloy dial, PMMA plastic lens, adjustment wheel, multi- function display, large display panel with weather change logo in two scales 2. Reading comparison: The contrast pin on the lens is used to compare readings to see if the atmospheric pressure rises or falls during a certain period of time. 3. When applicable: Generally applicable to ships, factories, laboratories, families. 4.Easy to install: light and easy to install, suitable to be hung or placed on a surface. 5. The product is used to measure temperature, humidity, atmospheric pressure and other parameters in the environment. It accurately predicts future weather changes according to the changes in 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, Hygrometer, Thermometer Material: metal + plastic Measuring range: 720- 800hPa,-3050,0- Resolution: 1C, 2% RH, 1hPa Diameter: about 72mm/2.83inch Thickness: about 33mm/1.3inch< br> Embedding diameter: 56mm/2.20inch Embedding height: 20mm/0.79inch package includes: 1 * Barometer 1 * Thermometer 1 * Hygrometer