Package Includes: Weather glass barometer *1 Metal wall mount bracket *1 Plastic syringe *1 Plastic tubing *1 Features: 1. Storm Glass Weather Predictor: The package includes a glass wall mount barometer with a fill kit and syringe for easy setup. 2. How It Works: The Thunder glass Barometer forecasts weather by translating air pressure changes into visible liquid movement inside its spout. 3. Quality Build: Each weather glass barometer is made of hand blown glass with a sturdy metal bracket and an integrated overflow tray. 4. Easy Setup: For best results, fill it halfway on a calm day and calibrate it so the water levels align at standard pressure. 5. Elegant Design: This timeless storm glass blends art with science, making it a functional decoration for any room. Note: 1. It is recommended to hang the barometer in partial sun where temperature is fairly constant. Changes in water temperature will impact readings and heat can evaporate your liquid. 2. Water will rise very quickly or even spill out into pan when heavy or potentially dangerous precipitation is expected.