File:EB1911 Telegraph - submarine cable - deep sea type.jpg
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EB1911_Telegraph_-_submarine_cable_-_deep_sea_type.jpg (237 × 233 pixels, file size: 26 KB, MIME type: image/jpeg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 19:55, 14 February 2016 | 237 × 233 (26 KB) | Library Guy | {{Information |Description ={{en|1=Technical drawing of a cross-section of a submarine telegraphic cable. ''a'' is the core; ''h'' is a thick coating of wet jute, yarn or hemp, forming a soft bed for the sheath. This cable is deep sea type.}} |Sourc... |