Beckmann thermometer
Date1900-1930
Inventory Number4433
ClassificationThermometer
Subject
Maker
Bender und Hobein
circa 1880-present
User
Department of Physics, Harvard University
founded 1884
Cultural Region
Place of Origin
Dimensions1.7 x 52.5 cm (11/16 x 20 11/16 in.)
case: 54.4 x 2.2 cm (21 7/16 x 7/8 in.)
case: 54.4 x 2.2 cm (21 7/16 x 7/8 in.)
Material
Accessoriesblack cylindrical cardboard case with red inner surface (top missing)
DescriptionA thermometer consisting of a glass tube with a mercury capillary enclosed in an outer glass tube sealed with a brass cap. The lower part of the thermometer that leads to the mercury bulb is thin and unmarked, with the upper section containing a milk glass scale calibrated from 0 to 5.6 degrees Celsius with a precision of 1/100 of a degree. The mercury capillary makes an S-bend near the top of the thermometer.
Signedmarked: Dr. Bender & Dr. Hobein, München
Inscribedon thermometer: Centigrade Normalthermometer
Curatorial RemarksA mentions: "0°-5.6°C V100° Lyman-Hall or Bridgman. From Lyman Lab Oct 13, 1963"
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 5.6 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.
ProvenanceFrom the Department of Physics, Lyman Laboratory, Harvard University.
American
Date: 1890-1910
Accessories: cylindrical cardboard case with green inner surface
Object number: 4438
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: 1890-1920
Accessories: black cardboard case with red inner surface
Object number: 4397
Dr. H. Geissler, Nachfolger Franz Müller
Date: 1890-1920
Accessories: black cardboard case with marbled paper inner surface
Object number: 4407
German
Date: 1890-1920
Accessories: black cardboard case with red inner surface
Object number: 4398
Dr. H. Geissler, Nachfolger Franz Müller
Date: 1890-1920
Accessories: brass cap with knob at top; black cardboard case with red inner surface
Object number: 4400
Dr. H. Geissler, Nachfolger Franz Müller
Date: 1890-1910
Accessories: green cardboard case
Object number: 4389
Fritz Köhler
Date: 1900-1920
Accessories: black cylindrical cardboard case with red inner surface
Object number: 4435
Dr. H. Geissler, Nachfolger Franz Müller
Date: 1890-1910
Accessories: black cardboard case with red inner surface
Object number: 4381