The D&D Nautical Stormglass (storm glass) is a high quality instrument, similar to the original stormglass instruments first used in the 1750’s to predict weather changes. The instrument was used by seamen, who mounted it on the mast of their ship. It was meant to be a storm warning instrument. Our observations tell us that the changes in the crystalline structure is triggered by changes in temperature and electrostatic charges. It is a pity that the changes in the crystals are too small indoors to use the instrument as a reliable forecaster. Still it is a mysterious and beautiful instrument that adds historic value. Normally ships in 1-3 business days. MSRP: $69.99.

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