T-Square

Description
This 51-1/2" wooden T-square has a scalloped top piece attached to the handle by 6 brass screws. A hole at the end of the handle is for hanging the instrument. It has no markings, but paint and ink stains on the handle indicate it was heavily used. The dating of other objects from this donor suggests this instrument was made about 1900. Compare to MA*328396 and MA*328397.
Location
Currently not on view
date made
ca 1900
Physical Description
wood (overall material)
brass (overall material)
Measurements
overall: 130.8 cm x 34.6 cm x 1.5 cm; 51 1/2 in x 13 5/8 in x 19/32 in
ID Number
MA.328398
accession number
272517
catalog number
328398
Credit Line
Gift of Eunice L. Hoffman
subject
Mathematics
Drawing Instruments
Drafting, Engineering
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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