interchangeable part for drawing instrument

interchangeable part for drawing instrument

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Usage conditions apply
This item is part of the set of drawing instruments owned and used by Samuel Pierpont Langley, the astrophysicist who served as the third Secretary of the Smithsonian Institution.
Currently not on view
Object Name
interchangeable part for drawing instrument
overall: 3 11/16 in x 1/4 in x 5/16 in; 9.36625 cm x.635 cm x.79375 cm
ID Number
catalog number
accession number
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Medicine and Science: Physical Sciences
Data Source
National Museum of American History
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