Instruction Manual for Pickett & Eckel Log Log Trig Slide Rule
date: label: date made
content: 1949
name: label: maker
content: Hartung, Maurice L.
notes: label: Description
content: The citation information for this small 32-page booklet is: Maurice L. Hartung, <i>How to Use the 300 Log Log Trig Pocket Slide Rule</i> (Chicago: Pickett & Eckel, Inc., 1949). It provides general information on how to use slide rules, including the arithmetical operations, locating the decimal point, combining multiplication and division, using the folded scales, calculating roots, trigonometry, and vectors.
label: Description
content: Model 300 was a six-inch, pocket-sized duplex slide rule and is not presently represented in the Smithsonian collections, although 1999.0096.01 is a ten-inch log log trig rule. Hartung was a University of Chicago professor who helped Pickett & Eckel market their products to schools and who wrote several instruction manuals for the company's slide rules. See 1979.0601.02.
label: Location
content: Currently not on view
place: label: place made
content: United States: Illinois, Chicago
topic: label: Subject
content: Mathematics
label: Subject
content: Rule, Calculating
label: Subject
content: Education
setName: label: See more items in
content: Medicine and Science: Mathematics
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content: Science & Mathematics
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content: Trigonometry
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content: Slide Rules
creditLine: label: Credit Line
content: Gift of Frank M. Graves
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1979.0601.03
label: accession number
content: 1979.0601
label: catalog number
content: 1979.0601.03
objectType: label: Object Name
content: pamphlet
physicalDescription: label: Physical Description
content: paper (overall material)
label: Measurements
content: overall: 15.2 cm x 10.7 cm x .2 cm; 5 31/32 in x 4 7/32 in x 3/32 in