Hydrometer
name: label: maker
content: Burke and James
notes: label: Description
content: Glass hydrometer with ballast, and paper label reading “Burke & James Actinometer, Chicago and New York.” There is also a glass jar; and a wooden case marked “EASTMAN / TESTED HYDROMETER” and “EASTMAN KODAK COMPANY / ROCHESTER, NEW YORK.”
label: Description
content: An actinometer measures the intensity of radiation. In this form, designed for use by photographers, the scale indicates the number of grains of silver nitrate to ounce of water at a particular light level. Burke & James was a camera manufacturer in Chicago; the firm was established in 1897 by Henry Burke and David James.
label: Description
content: Ref: Ad for the new Eastman Kodak hydrometer in <i>Standard Photo Messenger</i> 10 (1915).
label: Location
content: Currently not on view
place: label: place made
content: United States: Illinois, Chicago
setName: label: See more items in
content: Medicine and Science: Chemistry
creditLine: label: Credit Line
content: June W. Leonard
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1991.0691.44
label: accession number
content: 1991.0691
label: catalog number
content: 1991.0691.44
objectType: label: Object Name
content: Hydrometer
physicalDescription: label: Physical Description
content: glass (overall material)
label: Physical Description
content: wood (overall material)
label: Measurements
content: overall: 15.2 cm; 6 in
label: Measurements
content: overall in case: 8 5/16 in x 2 3/16 in; 21.11375 cm x 5.55625 cm