T-Square

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Description
A wooden bar (6-1/8" x 2" x 3/4") is attached to a flat wooden handle (17-7/8" x 2" x 1/8") by nine wooden pegs. By the 17th century, draftsmen used T-squares to help them draw horizontal lines. The instrument was also used in conjunction with a set square or triangle to draw vertical and diagonal lines. The dating of other objects from this donor suggests this object was made about 1900. Compare to MA.328397 and MA.328398.
Reference: Maya Hambly, Drawing Instruments, 1580–1980 (London: Sotheby's Publications, 1988), 113.
Location
Currently not on view
date made
ca 1900
Physical Description
metal (overall material)
wood (overall material)
Measurements
overall: 45.6 cm x 15.6 cm x 2 cm; 17 15/16 in x 6 5/32 in x 25/32 in
ID Number
MA.328396
accession number
272517
catalog number
328396
Credit Line
Gift of Eunice L. Hoffman
subject
Mathematics
Drawing Instruments
Carpentry
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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