Thermoscope is a (glass) weather glass similar to types used in 17th century. Made in 2 parts in our own glass workshops (liquid not supplied - can be simply filled with some coloured water) Is responsive to pressure and temperature change. An unusual simple barometer. Delivery by arrangement.
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A large modern enviromentally friendly liquid barometer from Belgium. This lightly frosted glass backed barometer and thermometer comes with a chrome hanging screw not illustrated. Based on the Aide principle of traping a gas and using oil to show changes, the thermometer helps compensate for temperature changes.

COLLECTION NORMALLY - DELIVERY ONLY BY ARRANGEMENT
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Inspired by reasearch into his many barometer books, our director based this curious instrument on a barometer made by Robert Hooke 1635 - 1703 (of the Royal Society) The Mahogany case surrounds a 17th Century style paper scale with summer and winter predictions. The brass indicator records the level of the oil which is temperature stabalised by our patented vacuum glass. Of inerest to the scientificly minded collector. Only made and sold by us in our workshop. Delivery in UK by special arrangement - collection recommended.
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A modern version of the sympiesometer in mahogany case with thick bowed glass front. The printed paper scales with picture of ship of the Antartic Expedition of 1839 .
Collection advised. delivery by special arrangement
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Collins Patent Table Barometer, a glass barometer originally designed at Merton, the glass tube has an internal glass spiral tube filled with distilled water, which rises and falls with the changing air pressure. These also react to temperature change but if temperature is even then pressure alone will be seen. A modern version of a very primative type of weather indicator. Decorative and curiousity value. Delivery only by arrangement - delicate.
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Weather Glass, hand-blown glass file, mounted with brass fitments, hand finished and lacquered on brown and cream backboard with some interpretations given and mounted in wooden frame (No guarantee that this works!) but a fun item worth experimenting with, where you hang will make a difference to crystal formations.
We have developed the mixture over many years from an original recipe by Negretti and Zambra. No one really understands why the crystalls sometimes change, perhaps electrical tension , certainly temperature makes a difference. Originally hung outside these examples are for indoor use, near a window, on an outside wall or in an entrance hall etc.
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Thunder bottle, possibly the oldest barometer known to man. 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 alone will be seen. Made from very thin clear glass, suggested to hang with suitable string through glass loop. Filled with coloured water which some anti bacterial fluid can be added to hinder mould growths. Distilled water advised.
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