Level

Level

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Description
Riley Root (1795-1870) was a teacher, surveyor, inventor, and early settler of Illinois. This brass surveyor’s level is the model he submitted with his application for a patent issued in 1859. The arc has a 3-inch radius and is graduated by degrees. The inscription reads "Riley Root."
Ref: Riley Root, “Level,” U.S. Patent 26,621 (Dec. 27, 1859).
Location
Currently not on view
Object Name
level
Object Type
Patent Model
Measurements
overall: 5 in x 14 in x 4 1/4 in; 12.7 cm x 35.56 cm x 10.795 cm
overall: 5 in x 14 in x 4 1/8 in; 12.7 cm x 35.56 cm x 10.4775 cm
ID Number
PH.308913
catalog number
308913
accession number
89797
patent number
26,621
See more items in
Medicine and Science: Physical Sciences
Data Source
National Museum of American History
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