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Cable Sample - Submarine Telegraph, Intermediate, Date Unknown Reg. No: ST 009074
- Section of an intermediate submarine telegraph cable. The central conductor is surrounded by insulation, brass tape , more insulation, armouring wires, and an outer protective covering.
Intermediate cable was inserted between the less-protected and lighter deep-sea cable and the more heavily protected shore-end cable.
- The central conductor is a strand of 7 copper wires. It is insulated with gutta percha or vulcanized rubber and protected by a wrapping of brass tape. The brass is covered with more insulation and wrapped with armouring wires. The armouring wires are covered by an outer protective coating.
- Acquisition Information:
- Donation from Australia: Post Master General's Department (PMG), 1916
|Dimensions:||250 mm (Length), 39 mm (Diameter)|
|Tagged with:||submarine cables, telegraphy|
|Themes this item is part of:||Australia and the global telegraph network 1854-1902, Telegraphy Collection, Information & Communication Collection|