Faber-Castell 67/87 Rietz Simplex Slide Rule
date: label: date made
content: 1953
name: label: maker
content: Faber, A. W.
notes: label: Description
content: This inexpensive one-sided white plastic (Geroplast) five-inch linear slide rule has a transparent plastic indicator. A five-inch scale along the upper edge of the rule is divided to 32nds of an inch. Scales on the base and on the front of the slide are not lettered, but the scales on the top of the base correspond to K and A scales and the scales on the bottom of the base correspond to D and L scales. Scales on the slide correspond to B, CI, and C scales. The scales on the back of the slide are labeled sin, sin/tg, and tg. This arrangement of scales is known as the "System Rietz," developed by the German engineer Max Rietz in 1902.
label: Description
content: The left end of the slide is marked: CASTELL. Underneath the slide is marked: [logo of weighing scales] A. W. FABER [logo of castle on its right side] CASTELL [logo of castle on its right side] 67/87 RIETZ (/) MADE IN GERMANY. Under the slide is also stamped: I. MOLELLA. Date codes on the back appear to read 53 and 1. The brown leather case is marked: FABER- (/) CASTELL (/) 67/87 (/) Made in Germany.
label: Description
content: Faber-Castell of southern Germany introduced the 67 series of slide rules in 1952 and sold them through about 1976, although the form of logo on this example was only in use from 1952 to 1956. The date codes suggest a manufacture date of January 1953.
label: Description
content: The owner of the slide rule, Isaac Giancinto Molella (1908–1982), was in the Cornell University class of 1932. He worked for General Electric as an electrical engineer at Electronics Park in Syracuse, N.Y., in 1953, and as a technical representative for the U.S. Air Force at radar sites in North Africa and Europe between 1954 and 1957.
label: Description
content: References: Dieter von Jezierski, <i>Slide Rules: A Journey Through Three Centuries</i>, trans. Rodger Shepherd (Mendham, N.J.: Astragal Press, 2000), 28, 34, 53–61; Panagiotis Vinetsianos, "A. W. Faber Castell Slide Rules: The Relationship Between Date of Manufacture and Indication of Brand Name, Model Number, and Model Name," <i>Journal of the Oughtred Society</i> 9, no. 1 (2000): 3–6; accession file.
label: Location
content: Currently not on view
place: label: place made
content: Germany: Bavaria, Geroldsgrün
topic: label: Subject
content: Mathematics
label: Subject
content: Rule, Calculating
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: In Memory of Isaac Giacinto Molella
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1992.0433.03
label: accession number
content: 1992.0433
label: catalog number
content: 1992.0433.03
objectType: label: Object Name
content: slide rule
physicalDescription: label: Physical Description
content: plastic (overall material)
label: Physical Description
content: leather (case material)
label: Measurements
content: overall: .8 cm x 16.2 cm x 4.6 cm; 5/16 in x 6 3/8 in x 1 13/16 in