Thermometer
notes: label: Description
content: The Beckmann differential thermometer is used to measure small differences in temperature, having a readability of around 0.001°C. Ernest Otto Beckmann (1853-1923), a German pharmacist and chemist, invented the form. This example has a range of 5 or 6 degrees in 1/100 divisions, and an auxiliary scale reading from -20 to +140 degrees C in 2 degree divisions. It also has a "MADE IN U.S.A." inscription.
label: Description
content: Ref: Ernst Beckmann, “Modification of the thermometer for the determination of molecular weights and small temperature differences,” Journal of Physical Chemistry 51 (1905): 329-343.
label: Location
content: Currently not on view
place: label: place made
content: United States
setName: label: See more items in
content: Medicine and Science: Medicine
creditLine: label: Credit Line
content: Gift of George Washington University, School of Pharmacy; Accession 259201 (1964)
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MG.M-10995
label: catalog number
content: M-10995
label: accession number
content: 259201
label: catalog number
content: 259201.532
objectType: label: Object Name
content: Thermometer
physicalDescription: label: Physical Description
content: glass, ?, opaque (overall material)
label: Physical Description
content: glass, ?, transparent (overall material)
label: Physical Description
content: metal (overall material)
label: Measurements
content: overall -case: 24 1/4 in x 1 in; 61.595 cm x 2.54 cm