Open Triangle
date: label: date made
content: ca 1900
notes: label: Description
content: This unmarked 8" 30°-60°-90° triangle with an open interior is made of two different woods, with a section of darker wood laid between two sections of lighter wood. The dating of other objects from this donor suggests the triangle was made around 1900. Compare to MA.335330. Neither Keuffel & Esser nor the Eugene Dietzgen Company advertised triangles like this one. James W. Queen of Philadelphia did offer walnut or mahogany triangles with a maple inlay, but the firm did not sell the instrument in the 8-inch size.
label: Description
content: Reference: James W. Queen & Co., <i>Priced and Illustrated Catalogue of Mathematical Instruments</i> (Philadelphia, 1883), 51.
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: Squares and Triangles
label: See more items in
content: Science & Mathematics
creditLine: label: Credit Line
content: Gift of Eunice L. Hoffman
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MA.335329
label: catalog number
content: 335329
label: accession number
content: 305958
objectType: label: Object Name
content: triangle
physicalDescription: label: Physical Description
content: wood (overall material)
label: Measurements
content: overall: 11.7 cm x 20 cm x .5 cm; 4 19/32 in x 7 7/8 in x 3/16 in