Kit weather glass

The weatherglass is one of the oldest weather observation instruments in the world. Already old seafaring peoples like the Phoenicians used this instrument to weather forecasts, which are important during the navigation. Goethe also occupied himself with his time. With this DIY kit you can create your own weatherglass and get to the bottom of the physiological phenomenon of the air pressure. The level of the water in the tube reliably shows all air pressure changes - a physical teaching and learning object. The finished weatherglass is about 6,5 x 6,5 x 27cm. Contents: Wooden base, test tube, tube, stopper, seal, rubber rings, pin, blue food color and instructions. Suitable from 14 years.