Chemical Slide Rule
date: label: Date made
content: 1930s?
name: label: maker
content: Keuffel & Esser Co.
notes: label: Description
content: Slide Rule of Chemical Equivalents with "Keuffel & Esser Co N.Y.” and “Pat. 1,930,852" inscriptions, and serial number 499,963. The patent was issued to Adolph W. Keuffel (1894-1975), a graduate of the Stevens Institute of Technology who worked for the Keuffel & Esser Co.
label: Description
content: Ref: Adolph W. Keuffel, “Slide Rule,” U.S. Patent 1,930,852 (Oct. 17, 1933), assignor to Keuffel & Esser Co.
label: Location
content: Currently not on view
place: label: place made
content: United States: New York, New York City
setName: label: See more items in
content: Medicine and Science: Modern Physics
creditLine: label: Credit Line
content: Rensselaer Polytechnic Institute. Department of Chemistry
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1994.0125.62
label: accession number
content: 1994.0125
label: catalog number
content: 1994.0125.62
objectType: label: Object Name
content: Slide rule, chemical equivalents (mole ratios)
physicalDescription: label: Measurements
content: overall: 6.5 cm x 33 cm x 2.5 cm; 2 9/16 in x 13 in x in