Open Triangle
date: label: date made
content: ca 1900
notes: label: Description
content: This 12" 30°-60°-90° triangle with an open interior is made of two different woods, with a section of darker wood set between two sections of lighter wood. Each corner is reinforced with horizontal splines made from the lighter wood: two in the right angle, and three in the other two angles. The back of the object has a sticker marked: 838. Compare to 1977.1101.0087, MA.335329, and MA.335330.
label: Description
content: Neither Keuffel & Esser nor the Eugene Dietzgen Company advertised triangles like this one. James W. Queen of Philadelphia offered two-toned triangles, of walnut or mahogany with a maple or ebony inlay, but they did not have the splines. The previous owner of this instrument collected more than 1,200 hand tools and machine tools and displayed them at his family's building company in Baltimore, Md. This object was item number 838 in his collection.
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
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content: Squares and Triangles
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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: 1977.1101.0089
label: catalog number
content: 1977.1101.0089
label: accession number
content: 1977.1101
objectType: label: Object Name
content: triangle
physicalDescription: label: Physical Description
content: wood (overall material)
label: Measurements
content: overall: 30 cm x 17.7 cm x .3 cm; 11 13/16 in x 6 31/32 in x 1/8 in