Features: This versatile analog barometers hygrometer thermometers combines three essential environmental monitoring functions into compact device, providing stable readings without the need for batteries for easy operate . Featuring a strong metal frame and a sleek 90mm silver , this instrument offer clear analog pointers for easy visualization of precise pressure, temperature, and humidity data. Ideal for homeowners, office workers, and outdoor adventurers who require accurate environmental insights to manage daily activities and secure comfort. Perfect for use in homes, offices, or during travel and camping trips, enabling real time tracking of weather trends and indoor conditions for enhanced preparedness. With its classical retro modern design and robust construction, this analog barometers ensures long lasting performances and effortless integration into any decor or setting. Specifications: Component : metal Diameter: about 90mm/4inch Package Includes: 1xBarometer Or 1xThermometer Or 1xHygrometer note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.