Once used by seafarers to predict oncoming storms, this historical device responds to atmospheric fluctuations to forecast the weather! How to Predict the Weather: Clear liquid: Bright and clear weather.

Cloudy liquid: Cloudy, possible thunderstorms & rain.
Small dots in the liquid: Humid or foggy weather.
Large flaky crystals: Cloudy skies, snow in winter.
Threads of crystals at the top: Windy weather.
Crystals at the bottom Frost may be coming.

7.5X7.5X15CM

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