level square compass

level square compass

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Description
James R. Abbott, of Midway, Indiana, devised an instrument combining features of use to a surveyor with others of use to a carpenter. He submitted this model with his patent application.
Ref: James R. Abbott, “Improvement in Combined Level, Square, Compass, and Plumb-Staff,” U. S. Patent 51,675 (Dec. 26, 1865).
Location
Currently not on view
Object Name
level square compass
Measurements
overall: 3 in x 10 in x 2 1/4 in; 7.62 cm x 25.4 cm x 5.715 cm
overall: 3 9/16 in x 10 3/8 in x 2 3/4 in; 9.04875 cm x 26.3525 cm x 6.985 cm
ID Number
PH.315257
catalog number
315257
accession number
219305
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Medicine and Science: Physical Sciences
Data Source
National Museum of American History
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