Range Correction Chart, Felsenthal FAS-3
date: label: date made
content: 1945
name: label: author
content: G. Felsenthal & Sons
notes: label: Description
content: This white plastic chart was designed for the U.S. Army Signal Corps. It is a nomogram for finding the range correction in yards of a weapon, by lining up the meteorological correction as a percentage of the range and the range.
label: Description
content: On the left is a scale marked “Range Correction in Yds.” On the right is a scale marked “Percentage Meteorological Correction” and on the diagonal between the two is a scale marked “Range in Yds.” According to a label received with the object and stored in the accession file, the object was made in 1945.
label: Description
content: The meteorological correction is found from the temperature and wind speed using a related chart called a “sound velocity corrector” (for an example, see 1977.1141.42) .
label: Description
content: A mark on the object reads: Range Correction Chart PT-63/TSS-1.
label: Description
content: For an explanation of the mathematical theory of this kind of nomogram, see Lipka. For a similar device used for another purpose, see 1985.0636.01.
label: Description
content: References:
label: Description
content: Joseph Lipka, <I>Graphical and Mechanical Computation. Part I. Alignment Charts</I>, New York: John Wiley & Sons, 1921, pp. 65–
label: Description
content: 67.
label: Description
content: Accession file.
label: Location
content: Currently not on view
place: label: place made
content: United States: Illinois, Chicago
topic: label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
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content: Mathematical Charts and Tables
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content: Military
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content: Science & Mathematics
creditLine: label: Credit Line
content: Gift of Ben Wharton Rau and Margery Felsenthal Rau
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1977.1141.43
label: catalog number
content: 336427
label: accession number
content: 1977.1141
objectType: label: Object Name
content: chart
physicalDescription: label: Physical Description
content: plastic (overall material)
label: Measurements
content: overall: .1 cm x 26.6 cm x 20.3 cm; 1/32 in x 10 15/32 in x 8 in