The Weather Storm Glass

This Storm Glass is an incredible natural phenomenon as featured on The Weather Channel, it is practical, a stunning style icon, historical talking point and the perfect Christmas gift for the weather curious budding scientist in S/M/L/XL!

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The Storm Glass is the most fascinating weather device, used by sailors to forecast storms for hundreds of years, gaining popularity back in 1859 after the Royal Charter Storm when the Crown distributed Storm Glasses to many small fishing communities around the British Isles.
The appearance of the liquid transforming from clear to cloudy to crystal snowflakes predict whether the weather will be clear, cloudy, or filled with thunderstorms and is a joy to behold it's ever changing form.
Every beautifully crafted Storm Glass comes to you securely packaged and complete  with its own solid wood stand, or you can buy the 6.5 or 9.5 cm stand on it's own. The sizes of the teardrop shape glass weather predictor are:

Small      115 mm x 65 mm
Medium  120 mm x 60 mm 
Large      180 mm x 80 mm   
XLarge    200 mm x  98 mm 

* Please allow up to 20 working days for delivery to reach you on this item At this time

Here is the science bit....
The changes of the solution signify the following:

• Clear liquid: Bright weather
• Crystals at bottom: Thick air, frost in winter
• Dim liquid with small stars: Thunderstorms
• Large flakes: Heavy air, overcast sky, snow in winter
• Threads in upper portion of liquid: Windy weather
• Small dots: Damp weather, fog
• Rising flakes which remain high: Wind in the upper air regions
• Small stars: In winter on bright, sunny days, snow in one or two days
• The higher the crystals rise in the glass tube in winter the colder it will be

Specifications:  

• Contains one Storm Glass with a solid wood base
• Replacement wood base can be purchased too
• Weight: 7 oz (200 g)
• Storm Glass may take up 2 weeks to settle that the crystals may stabilise and adapt to its new environment 
• Do not place under direct sunlight, heating or air conditioning to avoid deterioration of the crystal