Depth Sounder
name: label: maker
content: Walker, Thomas F.
notes: label: Description
content: Thomas Walker (1805-1871) was a mechanic in Birmingham, England, who designed and manufactured apparatus for ships at sea. He submitted this model of a depth sounder to the U.S. Patent Office, along with an application for a U.S. patent. The inscription reads "T. WALKER & SON's PATENT 1148" (the number apparently referring to a British patent issued in 1866).
label: Description
content: Walker’s uncle, Edward Massey, was the leading designer and manufacturer of mechanical logs in the first half of the nineteenth century.
label: Description
content: Ref: Thomas Walker and Thomas Ferdinand Walker, “Improvement in Apparatus for Taking Soundings,” U.S. Patent 76,361 (April 7, 1868).
label: Location
content: Currently not on view
place: label: place made
content: United Kingdom: England, Birmingham, Birmingham
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.308558
label: catalog number
content: 308558
label: accession number
content: 89797
objectType: label: Object Name
content: Sounder
label: Object Type
content: Patent Model
physicalDescription: label: Measurements
content: overall: 9 1/2 in x 4 3/4 in x 4 3/4 in; 24.13 cm x 12.065 cm x 12.065 cm
label: Measurements
content: overall: 3 1/2 in x 9 5/8 in x 3 1/2 in; 8.89 cm x 24.4475 cm x 8.89 cm