Sample or Telegraph Cable for Mines, Copper wire of seven wires in a thick insulating layer of a black plastic., anonymous, unknown, 1865 - 1875, copper (metal), l cm × d cm

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Sample or Telegraph Cable for Mines, Copper wire of seven wires in a thick insulating layer of a black plastic., anonymous, unknown, 1865 - 1875, copper (metal), l cm × d cm

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Size: 6761px × 3940px
Location:
Photo credit: © Artokoloro / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 4, 5, 1865, 1875, black, cable, copper, insulating, layer, metal, mines, plastic, sample, telegraph, thick, unknown, wire, wires