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Hygrometer - J. Grimoldi, Melbourne Object Reg. No: ST 022143

Wet & dry bulb hygrometer. Range 20-150 deg. F, made or distributed by J. Grimoldi, Melbourne. Used at Melbourne Observatory.

A hygrometer measures the amount of humidity in the atmosphere.
Tubes 9 in. (22.9 cm.) long, bulb of normal glass & English lead capillary fitted on a nickel plated brass scale plate mounted on a board. Glass water reservoir with bronzed brass bracket.
Acquisition Information:
Transfer from Melbourne Observatory, 1945
Discipline: Technology
Dimensions: 45.5 cm (Height), 7.5 cm (Width), 13 cm (Length)
Dimension Comment: Dimensions of object on backing/display board.

More information

Tagged with: hygrometers, 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: Board marked "GRIMOLDI, MELBOURNE".
Maker: John B. Grimoldi, Melbourne, Victoria, Australia
User: Melbourne Observatory, South Yarra, Victoria, Australia

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