Storm glass barometer with beech wood base

Ship in a bottle? More like storm in a bottle. An invention of the captain of Darwin's HMS Beagle, this updated barometer responds to atmospheric fluctuations to forecast the weather. Crystals within the sealed glass chamber cluster or disperse with changes in air pressure or temperature. 

Please note: when you receive the storm glass it will be in a state of disruption and may take a week or more to settle.
Description 14 x 6 x 6cm. Glass tube. Solid beechwood base.