Abbé Refractometer
name: label: maker
content: Valentine, Warren P.
notes: label: Description
content: Warren P. Valentine began making refractometers when World War I limited the import of European instruments into the United States. By 1920 the National Bureau of Standards reported that Valentine's Precision Refractometer was “the most accurate Abbé refractometer we have so far tested.”
label: Description
content: In 1928, Valentine received the Edward Longstreth Medal of the Franklin Institute in “consideration of the meritorious work shown in the improvement of the mechanical and optical parts of the Abbé refractometer, thereby increasing its accuracy.”
label: Description
content: This example is marked “VALENTINE REFRACTOMETER NO. 591 INDUSTRO-SCIENTIFIC CO. PHILADELPHIA.” The National Bureau of Standards transferred it to the Smithsonian in 1965.
label: Location
content: Currently not on view
place: label: place made
content: United States: Pennsylvania, Philadelphia
topic: label: Subject
content: Chemistry
label: Subject
content: National Bureau of Standards
label: Subject
content: Franklin Institute
label: Subject
content: World War I
label: related event
content: World War I
setName: label: See more items in
content: Medicine and Science: Physical Sciences
label: See more items in
content: Saccharimeters
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content: Measuring & Mapping
creditLine: label: Credit Line
content: National Bureau of Standards
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.326622
label: catalog number
content: 326622
label: accession number
content: 261654
objectType: label: Object Name
content: refractometer
physicalDescription: label: Measurements
content: overall: 9 3/4 in x 16 5/8 in x 7 1/2 in; 24.765 cm x 42.2275 cm x 19.05 cm