Thermometer - Vacuum Solar Radiation, Negretti & Zambra, London, circa 1900

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Summary:: Vacuum solar radiation thermometer, made by Negretti & Zambra, London. Range +20 to 190 degrees Fahrenheit. Used at Melbourne Observatory.
Description:: Thermometer with a blackened bulb and is enclosed in a glass sheath from whcih all the air has been exhausted.
Acquisition Information:: Transfer from Melbourne Observatory, 1945

Discipline:	Technology
Dimensions:	6 cm (Height), 6 cm (Width), 38.5 cm (Length)

Tagged with:	physical apparatus instruments, thermometers
Themes this item is part of:	Melbourne Observatory Collection, Science & Measurement Collection, Positional Astronomy at Melbourne Observatory, Weights & Measures at Melbourne Observatory, Melbourne Observatory & Standard Time in Victoria, Astrographic Catalogue, Transits of Venus, 1874 & 1882, Buildings at Melbourne Observatory, Star Observations & Personal Equation, Meteorology at Melbourne Observatory, 1863-1908, Melbourne Observatory, 1863-1944, Geodetic Survey of Victoria, 1858-1872
Primary Classification:	PHYSICAL SCIENCES
Secondary Classification:	Meteorology
Tertiary Classification:	thermometers
Inscriptions:	Marked 'NEGRETTI & ZAMBRA'S PATENT, LONDON. M.O. 46'.
Maker:	Negretti & Zambra, London, Middlesex, England, Great Britain, circa 1900
User:	Melbourne Observatory, South Yarra, Victoria, Australia