Open Triangle

Description
This unmarked 6" 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. The dating of other objects from this donor suggests the triangle was made around 1900. Compare to MA*335329. James W. Queen of Philadelphia sold a similar walnut or mahogany triangle with a maple inlay for 50¢ in 1883.
Reference: James W. Queen & Co., Priced and Illustrated Catalogue of Mathematical Instruments (Philadelphia, 1883), 51.
Location
Currently not on view
Object Name
triangle
date made
ca 1900
Physical Description
wood (overall material)
Measurements
overall: 8.6 cm x 5 cm x .3 cm; 3 3/8 in x 1 31/32 in x 1/8 in
ID Number
MA*335330
catalog number
335330
accession number
305958
subject
Mathematics
Drawing Instruments
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Squares and Triangles
Data Source
National Museum of American History, Kenneth E. Behring Center

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