Level
notes: label: Description
content: Patent model for John Clark, “Telescope Level,” U.S. Patent 218,710 (August 19, 1879). Clark lived in Washington, D.C., and was probably a machinist at the U.S. Naval Observatory.
label: Location
content: Currently not on view
setName: label: See more items in
content: Medicine and Science: Physical Sciences
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.308966
label: catalog number
content: 308966
label: accession number
content: 89797
label: patent number
content: 218,710
objectType: label: Object Name
content: level
label: Object Type
content: Patent Model
physicalDescription: label: Measurements
content: overall: 3 5/8 in x 2 1/4 in x 7 1/8 in; 9.2075 cm x 5.715 cm x 18.0975 cm
label: Measurements
content: overall: 3 3/4 in x 2 3/16 in x 7 3/8 in; 9.525 cm x 5.55625 cm x 18.7325 cm