switch block for submarine telegraph

switch block for submarine telegraph

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Object Name
telegraph switch block
switch block
overall: 4 1/4 in x 3 1/2 in x 3 in; 10.795 cm x 8.89 cm x 7.62 cm
overall: 4 1/8 in x 3 1/8 in x 3 5/8 in; 10.4775 cm x 7.9375 cm x 9.2075 cm
ID Number
catalog number
accession number
Credit Line
Transfer from the United States Department of Defense, Navy Department
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Work and Industry: Electricity
Data Source
National Museum of American History
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