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interchangeable part for drawing instrument

interchangeable part for drawing instrument

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Description
This pencil 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.
Location
Currently not on view
Object Name
interchangeable part for drawing instrument
Measurements
overall: 3 1/2 in x 1/4 in x 5/16 in; 8.89 cm x.635 cm x.79375 cm
ID Number
PH.161972.09
accession number
161972
catalog number
161972.09
See more items in
Medicine and Science: Physical Sciences
Data Source
National Museum of American History
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