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Hygroscope - Metallic-Spiral, Mithoff, Germany, circa 1890s Object Reg. No: ST 022146

Summary:
Metallic-spiral hygroscope, by Mithoff, Germany. Used at Melbourne Observatory.

A hygroscope measures the amount of moisture in the atmosphere
Description:
Painted black metal with dial and a glass cover. There is a free arm that holds the dial and the metal cover. The arm has holes where the unit was attached to (possibly) a wall. Wooden display/backing board painted cream colour with screw holes where Hygroscope was attached.
Acquisition Information:
Transfer from Melbourne Observatory, 1945
Discipline: Technology
Dimensions: 21 cm (Height), 10 cm (Width), 26 cm (Length)

More information

Tagged with: hygroscopes, meteorological apparatus instruments
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: hygrometers
Inscriptions: Marked on dial: 'METALLIC- SPIRAL- HYGROSCOPE BY MITHOFF. D. R. PATENT NR. 16568. MANUFACTURED IN GERMANY'
Manufacturer: Mithoff, Germany, circa 1890s
User: Melbourne Observatory, South Yarra, Victoria, Australia

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