When a thunderstorm approaches, the water may rise so far that it drips from the spout. The operation of this weather forecasting instrument has been known since the beginning of the 17th century. At high air pressure (good weather) the water level in the spout is pressed down and at low air pressure (bad weather) the level rises. Fill the glass with water and color it if desired. Includes syringe for easy filling and blue dye. Dimensions: HxWxD 28x13.5x12 cm. Material: Glass/wrought iron.
