Cobalt EC&M Telegraph Insualtor

Cobalt EC&M Telegraph Insualtor

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Location
Currently not on view
Object Name
Insulator
CD 123 Insulator - 123ECM080
Other Terms
Insulator; Insulation
date made
ca 1875
maker
Electrical Construction & Maintenance Company
place made
United States: California, San Francisco
Physical Description
cobalt blue (overall color)
glass (overall material)
Measurements
overall: 4 1/2 in x 2 1/2 in; 11.43 cm x 6.35 cm
ID Number
EM.231781.1
catalog number
231781.1
accession number
43532
Credit Line
from A. E. Roome
See more items in
Work and Industry: Electricity
Communications
Data Source
National Museum of American History
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