hydrometer (araeometer)
Datecirca 1850
Inventory NumberDW0791
ClassificationHydrometer
Subject
Maker
German
Owner
Schlagintweit Brothers
1854 - 1858
Cultural Region
Dimensions29.8 x 1.8 x 1.8 cm (11 3/4 x 11/16 x 11/16 in.)
case: 40.6 x 9 x 9 cm (16 x 3 9/16 x 3 9/16 in.)
case: 40.6 x 9 x 9 cm (16 x 3 9/16 x 3 9/16 in.)
Material
Accessoriesblue cardboard cylindrical case
DescriptionA hydrometer consisting of a glass vessel with an air-filled cylinder connected through a long neck to a spherical bulb filled with mercury, and at the other end connected to a long, narrow glass stem that contains a paper scale wrapped inside. The instrument's scale goes from 0 at the top, to 60 near the air-filled bulb.
Signedunsigned
Inscribedon scale: Araometerum pro liquoribus aqua gravioritus [and] nach Baumé 0 to +60
Curatorial RemarksStored with DW0790, DW0792 and DW0793.
FunctionFor liquids with a density equal or greater than that of water. One lets the hydrometer float on the liquid and then one takes a reading at the height indicated by the liquid's surface.
ProvenanceAcquired with other instruments from the Schlaginweit Expedition in Germany, 1959 (Object 0). Donated to CHSI August 17, 1988.
Historical AttributesThis instrument appears to have been to the Schlaginweit Expedition to Central Asia between 1854 and 1858.
German
Date: circa 1850
Accessories: cylindrical cardboard case with a pattern of brown and yellow flowers
Object number: DW0793
R. G. Greiner
Date: circa 1850
Accessories: black cylindrical cardboard case
Object number: DW0792
Dr. H. Geissler, Nachfolger Franz Müller
Date: 1900-1920
Accessories: blue cylindrical cardboard case
Object number: 4447
Dr. H. Geissler, Nachfolger Franz Müller
Date: 1900-1920
Accessories: green cylindrical cardboard case
Object number: 4446
American
Date: 1890-1920
Accessories: cardboard case with a black and green mottled surface
Object number: 4442
American
Date: 1890-1920
Accessories: cardboard case with a black and brown mottled surface
Object number: 4441
American
Date: 1890-1920
Accessories: cardboard case with a black and brown mottled surface
Object number: 4440
American
Date: 1890-1920
Accessories: cardboard case with a black and brown mottled surface
Object number: 4443
American
Date: 1890-1920
Accessories: cardboard case with a black and green mottled surface
Object number: 4444
American
Date: 1870-1920
Object number: 1998-1-0293