pentane thermometer
Date1890-1915
Inventory Number4427
ClassificationThermometer
Subject
Maker
German
Cultural Region
Dimensions0.9 x 37.4 cm (3/8 x 14 3/4 in.)
case: 42.3 x 2.3 cm (16 5/8 x 7/8 in.)
case: 42.3 x 2.3 cm (16 5/8 x 7/8 in.)
Material
Accessoriesblack cardboard case with pink inner surface, metal cylindrical case outside
DescriptionA thermometer consisting of a thin glass tube filled with a clear liquid (pentane) resting inside an outer glass tube that also contains a milk glass scale for the thermometer, calibrated from -200°C to 50°C with a 1 degree precision. It has a cylindrical bulb filled with a clear liquid (and an air bubble) at one end, while at the other end it has a small glass sphere.
Signedunsigned
Inscribedscale marked on back: Centigrade Kaltethermometer n. Dr. Rothe
FunctionThis is a thermometer for very low temperatures, filled with pentane, a volatile liquid substance with a very low freezing point.
German
Date: 1910-1915
Accessories: black cardboard case with red inner surface
Object number: 4420
German
Date: 1890-1920
Accessories: black cardboard case with red inner surface
Object number: 4398
American
Date: 1890-1910
Accessories: cylindrical cardboard case with green inner surface
Object number: 4438
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
Bender und Hobein
Date: 1900-1930
Accessories: black cylindrical cardboard case with red inner surface (top missing)
Object number: 4433
Corning
Date: 1900-1920
Accessories: black cardboard case with green inner surface
Object number: 4406
Dr. H. Geissler, Nachfolger Franz Müller
Date: 1890-1920
Accessories: black cardboard case with red inner surface
Object number: 4404
Heinrich J. W. Geissler
Date: 1860-1879
Accessories: marbled paper on cardboard case with peppewort designed inner surface
Object number: 4401
German
Date: 1905-1915
Accessories: black cardboard case with diamond pattern and red inner surface
Object number: 4405
German
Date: 1905-1915
Accessories: black cardboard case with red inner surface
Object number: 4403
Dr. H. Geissler, Nachfolger Franz Müller
Date: 1890-1920
Accessories: black cardboard case with green inner surface
Object number: 4399