Beckmann thermometer
Date1902-1915
Inventory Number4410
ClassificationThermometer
Subject
Maker
German
Supplier
Scientific Materials Company
1902 - 1925
Cultural Region
Place of Origin
Dimensions1.9 x 54.5 cm (3/4 x 21 7/16 in.)
storage: 65.9 x 3 cm (25 15/16 x 1 3/16 in.)
storage: 65.9 x 3 cm (25 15/16 x 1 3/16 in.)
Material
Accessorieswooden case
DescriptionA thermometer consisting of a narrow glass tube filled with mercury that has a bulb at its lower end, an s-shaped top chamber. It is contained in a glass vessel with a brass cap. Its milk glass scale is calibrated from -0.2°C to 6.2°C graduated to 1/100 of a degree.
Signedon scale: Scientific Materials Company, Pittsburgh
Inscribedback of scale marked: Centigrad-Normal [and] Thermometer-Beckmann [and] Germany
FunctionThis is a thermometer that the user can fill with different amounts of mercury to use at different temperature ranges. It is very precise but because of this it has a narrow range of 6.4 degrees Celsius. To set it up for use, the thermometer would be placed in contact with a substance a few degrees above the upper required limit of temperature, and enough mercury would then be poured in so that the stem filled up to the s-bend. That way, the thermometer would have a range up to that temperature.
German
Date: 1900-1960
Accessories: wooden carrying case
Object number: 2003-1-0092
Eimer & Amend
Date: 1890-1910
Accessories: brown cardboard case
Object number: 1998-1-0179
Fritz Köhler
Date: 1900-1940
Accessories: cardboard case
Object number: 2008-1-0101
American
Date: 1890-1910
Accessories: cylindrical cardboard case with green inner surface
Object number: 4438
German
Date: 1890-1920
Accessories: black cardboard case with red inner surface
Object number: 4398
American
Date: circa 1940
Accessories: black case
Object number: 1998-1-0380
Corning
Date: 1900-1920
Accessories: black cardboard case with green inner surface
Object number: 4406
Robert Bötze
Date: 1880-1920
Accessories: brass cylindrical case with square flange near top
Object number: 4425
Dr. H. Geissler, Nachfolger Franz Müller
Date: 1890-1920
Accessories: black cardboard case with green inner surface
Object number: 4399
Dr. H. Geissler, Nachfolger Franz Müller
Date: 1890-1910
Accessories: green cardboard case
Object number: 4389
Dr. H. Geissler, Nachfolger Franz Müller
Date: 1890-1920
Accessories: black cardboard case with red inner surface
Object number: 4397