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Pickett 101-C Circular Slide Rule

National Museum of American History

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Object Details

Pickett & Eckel, Incorporated
Description
This yellow aluminum circular slide rule has three clear plastic indicators, one blank. The other indicator on the front is marked in red to denote the C, CI, A, AF, L, FA, LL2, LL1, DS, DT, and M scales. The indicator on the back is marked in red to denote the C, S,ST, and T scales. A ring of numbers under the scales on the back permits conversions from fractions to decimals.
The center of the front is marked: CIRCULAR SLIDE RULE – dial rule (/) PICKETT. The center of the back is marked: dial rule (/) NO 101-C. A triangular Pickett logo, of the form used between 1950 and 1958, appears at the bottom of the center; CHICAGO is printed below the logo.
Pickett & Eckel, a slide rule manufacturer based in Chicago and Alhambra, Calif., distributed a small booklet with this instrument, one of the few circular slide rules sold by the company and possibly the only circular model it manufactured. Maurice L. Hartung, a University of Chicago mathematics professor associated with the company, wrote the instruction manual (1981.0922.13). The booklet is copyrighted 1957, and the logo on this copy was used by the company between 1958 and 1962. Thus, this slide rule dates to about 1958.
References: Rodger Shepherd, "Pickett Metal Slide Rules," Journal of the Oughtred Society 1, no. 1 (1992): 5–8; Walter Shawlee, "Information About Pickett Slide Rules," Sphere Research Slide Rule Site, http://www.sphere.bc.ca/test/pickett.html.
Location
Currently not on view
Credit Line
Gift of John White
ca 1958
ID Number
1981.0922.12
catalog number
1981.0922.12
accession number
1981.0922
Object Name
calculating rule
slide rule
Physical Description
aluminum (overall material)
plastic (cursor material)
Measurements
overall: 1 cm x 11.8 cm x 11.8 cm; 13/32 in x 4 21/32 in x 4 21/32 in
place made
United States: Illinois, Chicago
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Slide Rules
National Museum of American History
subject
Rule, Calculating
Mathematics
Engineering, General
Record ID
nmah_1127895
Metadata Usage (text)
CC0
GUID (Link to Original Record)
http://n2t.net/ark:/65665/ng49ca746a9-aad1-704b-e053-15f76fa0b4fa

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Slide rule - Pickett NO. 101-C - Front View
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