Open Triangle

Description:

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.

Reference: James W. Queen & Co., Priced and Illustrated Catalogue of Mathematical Instruments (Philadelphia, 1883), 51.

Date Made: ca 1900

Location: Currently not on view

Subject: MathematicsDrawing Instruments

Subject:

See more items in: Medicine and Science: Mathematics, Squares and Triangles, Science & Mathematics

Exhibition:

Exhibition Location:

Credit Line: Gift of Eunice L. Hoffman

Data Source: National Museum of American History

Id Number: MA.335329Catalog Number: 335329Accession Number: 305958

Object Name: triangle

Physical Description: wood (overall material)Measurements: overall: 11.7 cm x 20 cm x .5 cm; 4 19/32 in x 7 7/8 in x 3/16 in

Guid: http://n2t.net/ark:/65665/ng49ca746a7-68ff-704b-e053-15f76fa0b4fa

Record Id: nmah_904230

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