Mechanical 3-in-1 Barometer — stainless steel, plastic, and wooden frame. Simultaneously measures ambient temperature, humidity and air pressure to help you anticipate short-term weather changes without batteries or electrical connections. Key benefits Reliable, long-lasting construction: heavy-gauge stainless steel, quality plastics and a wooden frame make this instrument sturdy and rust-resistant for extended use. Practical, battery-free operation: purely mechanical inner core requires no power source or sockets, so you can place it anywhere indoors and count on continuous performance. Actionable environmental info: temperature, humidity and air pressure readings together give a clearer idea of upcoming weather and indoor comfort than any single measurement. Easy to read and use: smooth-faced pressure gauge and clear markings make readings quick and straightforward. Features and specifications Functions: measures ambient temperature, relative humidity and air pressure at the same time. Materials: high-quality stainless steel, durable plastics and wooden frame; thick, solid construction. Mechanism: mechanical inner core — no batteries, no wiring. Durability: designed to resist rust and provide stable performance across different geographic areas. Practical applications (examples) Home office or study: monitor indoor air conditions to improve comfort and protect books or instruments from excessive humidity. Kitchen, entryway or bedroom: check temperature and pressure before heading out or adjusting heating and cooling. Restaurant, library or office reception: serves as an attractive, useful decor piece that informs staff and guests about local conditions. Use and placement Install or place anywhere inside the home — on a wall, shelf or in a sheltered porch area. Because it is wireless and mechanical, it is simple to position where you need it most. A classic, functional instrument that combines accurate environmental monitoring with traditional decorative appeal.