70 mm gold tone pointer barometer gauge designed to help forecast weather by measuring air pressure changes without batteries or electricity Mechanical and battery operation means no power required for accurate weather assessment Analog pointer provides a clear indication of pressure trends for weather forecasting and storm condition awareness Compact 70 mm dial with a gold finish for easy reading in any indoor setting Suitable for home, office, or classroom use; reliable performance in everyday weather monitoring Use scenarios In the home or hallway as a quick daily weather reference and decorative display In an office or study to plan outdoor activities or travel based on pressure trends In a classroom to demonstrate atmospheric pressure and weather forecasting concepts without electronics Key attributes Function: measures air pressure changes to forecast weather and identify storm conditions Size: 70 mm dial for easy reading Material/Finish: gold tone gauge and pointer Performance: battery, electricity operation with straightforward analog readout Compatibility: suitable for indoor display in homes, offices, and educational settings