Ole Jorgensen Creative Workshop Universal Circle Slide Rule
date: label: date made
content: ca 1970
name: label: maker
content: Creative Workshop, Inc.
notes: label: Description
content: This black plastic instrument is shaped like a pencil cup. A fixed scale labeled x<sup>3</sup> is near the rim, with four rotating parallel bands below it. The first band is white and has x and x<sup>2</sup> scales. The second band is gray and has two x scales. The third band is white and also has two x scales. The fourth band is gray and has an x<sup>2</sup> scale. The bands do not move very easily. The scales labeled x are logarithmically divided and run from 1 to 9.5 once (they are similar to the C and D scales on other slide rules). The scales labeled x<sup>2</sup> are divided logarithmically from 1 to 10 and then from 1 to 9, and are similar to the A and B scales on other slide rules. The scale labeled x<sup>3</sup> is divided logarithmically from 1 to 10 three times and resembles a K scale on other slide rules. There is no indicator.
label: Description
content: The rim of the object is marked in white: UNIVERSAL CIRCLE SLIDE RULE. The bottom of the instrument is marked: ORIGINAL DESIGN BY OLE JORGENSEN CREATIVE WORKSHOP INC. COPENHAGEN DENMARK (/) © OLE JORGENSEN 1970 PAT. PEND. MADE IN DENMARK. Ole Jørgensen's Creative Workshop made a variety of plastic items in the early 1970s, including slide rule pencil cups and desk calendars. Some were marked as promotional items for other companies. It is not known whether Jørgensen ever received a patent for this device. By 1972, the company's production shifted from Denmark to Hong Kong. The company was dissolved around 1980.
label: Description
content: References: Chris Gillings, "Universal Circle Slide Rule," http://chris.gillings.com/collect/slide/ucsr.html; "Universal Circle slide rule, 1970," Powerhouse Museum Collections Database, http://www.powerhousemuseum.com/collection/database/?irn=382846; "Historical Photos of People with Slide Rules and Related Ephemera," International Slide Rule Museum, http://sliderulemuseum.com/SR_Ephemera.htm; <i>The London Gazette</i> (24 January 1980), 1169, http://www.london-gazette.co.uk/issues/48076/pages/1169/page.pdf; completed online auction records.
label: Location
content: Currently not on view
place: label: place made
content: Denmark: Hovedstaden, Copenhagen
topic: label: Subject
content: Promotional Item
label: Subject
content: Rule, Calculating
label: Subject
content: Mathematics
label: Subject
content: Novelty
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Science & Mathematics
label: See more items in
content: Slide Rules
creditLine: label: Credit Line
content: Gift of John White
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1981.0922.14
label: catalog number
content: 1981.0922.14
label: accession number
content: 1981.0922
objectType: label: Object Name
content: calculating rule
label: Object Name
content: slide rule
physicalDescription: label: Physical Description
content: plastic (overall material)
label: Measurements
content: overall: 9.9 cm x 7 cm x 7 cm; 3 29/32 in x 2 3/4 in x 2 3/4 in