Irregular or French Curve
date: label: date made
content: ca 1920
notes: label: Description
content: This flat wooden drawing instrument has curves on the outside and in an inner opening.
label: Description
content: The previous owner of the device collected more than twelve hundred hand and machine tools, displaying them at his family's building company in Baltimore, Md. This object came in a tool chest along with several others. Compare 1977.1101.0096.
label: Description
content: This curve resembles one shown in Wallis. Hence the very rough date assigned.
label: Description
content: References:
label: Description
content: Roland S. Wallis, <I>Industrial Education Notes on Mechanical Drawing</I>, Ames, Iowa: Engineering Extension Department Iowa State College, 1922, p. 15.
label: Description
content: Accession File.
label: Location
content: Currently not on view
topic: label: Subject
content: Mathematics
label: Subject
content: Drawing Instruments
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Curves
label: See more items in
content: Science & Mathematics
creditLine: label: Credit Line
content: The John R. Gerwig, Jr., Collection
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1977.1101.0095
label: accession number
content: 1977.1101
label: catalog number
content: 1977.1101.0095
objectType: label: Object Name
content: Curve
physicalDescription: label: Physical Description
content: wood (overall material)
label: Measurements
content: overall: .3 cm x 20.9 cm x 7.3 cm; 1/8 in x 8 7/32 in x 2 7/8 in