Albree Trulog Spiral Circular Logarithmic Table
date: label: date made
content: after 1945
name: label: maker
content: Albree, G. Norman
notes: label: Description
content: This is Norman Albree's pilot model for a one-sided logarithmic chart. It is white paper on a wooden disc painted black. There is a clear celluloid indicator that pivots at the center and is cushioned on purple felt. The scale permits readings of logarithms from 10,000 to 100,000. The instrument is marked at the center: ALBREE TRULOG SPIRAL (/) G. NORMAN ALBREE (/) BOSTON. Inside the fifth ring of the spiral is marked: ©1945.
label: Description
content: George Norman Albree (1888–1986), the inventor and donor, attended Amherst College with the Class of 1911 and graduated from Dartmouth in 1912. He is best known for designing the first monoplanes purchased by the U.S. Army in 1917. However, after testing, the military deemed the aircraft too unreliable and slow and declined to order a production run from Albree's employer, the Pigeon Hollow Spar Company of East Boston, Mass.
label: Description
content: See also 335484 and 335487.
label: Location
content: Currently not on view
place: label: place made
content: United States: Massachusetts, Boston
topic: label: Subject
content: Rule, Calculating
label: Subject
content: Chart, Logarithmic
label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
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content: Science & Mathematics
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content: Slide Rules
creditLine: label: Credit Line
content: Gift of G. Norman Albree
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MA.335486
label: catalog number
content: 335486
label: accession number
content: 321674
objectType: label: Object Name
content: slide rule
physicalDescription: label: Physical Description
content: paper (part material)
label: Physical Description
content: plastic (cursor material)
label: Physical Description
content: wood (overall material)
label: Measurements
content: overall: 2 cm x 20.5 cm x 20.5 cm; 25/32 in x 8 1/16 in x 8 1/16 in