Thunder Bottle

Narrow Thunder Bottle, possibly the oldest known type of barometer known. Each barometer is hand-blown and ready to be filled with water and hung up in a suitable place - the water can spill out of the spout when stormy so be careful where you hang it! These also react to temperature change but if temperature is even then pressure changes alone will be seen. Made from soda glass, suggested to hang with suitable string through glass loop. Fill with coloured water, which some anti bacterial fluid can be added to hinder mould growth. Distilled water is advised. Measurements: 250mm x 75mm

£ 16.00 GBP