- Why you need this barometer - Measures temperature, humidity and atmospheric pressure to give a reliable snapshot of current conditions and to help predict short-term weather changes. - Fully mechanical design requires no batteries or power source — dependable indoors or outdoors without maintenance. - Attractive, traditional look doubles as a functional decorative piece for home, office or hospitality settings. - Key functions and performance - Measures: temperature in °F, air pressure in mmHg and inHg, and relative humidity in %. - Uses changes in ambient temperature, humidity and atmospheric pressure to indicate likely upcoming weather. - Mechanical barometer design provides continuous operation without electricity or wireless pairing. - Compatibility and placement - Suitable for indoor and outdoor use; install anywhere in the home, garden or RV. - Wireless and does not require a nearby power outlet. - Effective up to 3 feet above sea level, making it usable in many geographical areas. - Materials and build - Refined brass display behind a clear glass lens for easy reading. - Supported by a durable black plastic cover for mounting and protection. - Traditional styling fits offices, libraries, restaurants or any space that benefits from a classic look. - Easy setup and calibration - Mounting: hang on a wall using a nail or by driving nails with a hammer or nail gun. - Calibration: follow the included instructions to adjust the barometer for local conditions; simple and straightforward. - Practical use scenarios - Home: Place in the hallway or kitchen to monitor indoor comfort (temperature and humidity) and anticipate weather changes before leaving the house. - Garden or RV: Mount outdoors or in an RV to track pressure trends and humidity without worrying about batteries or outlets. - Office or restaurant: Install in a reception area, library or dining room where the instrument serves both as a decorative element and a practical tool for monitoring indoor conditions. - What makes it stand out - No batteries or electrical hookup required — reliable, low-maintenance weather monitoring. - Classic brass-and-glass appearance that complements formal interiors while delivering accurate readings in °F, mmHg/inHg and % humidity. - Simple installation and calibration let you start using it quickly and confidently.