File:EB1911 Telegraph - Varley's Double Cup Insulator.jpg
EB1911_Telegraph_-_Varley's_Double_Cup_Insulator.jpg (212 × 555 pixels, file size: 53 KB, MIME type: image/jpeg)
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 18:40, 11 February 2016 | 212 × 555 (53 KB) | Library Guy | {{Information |Description ={{en|1=Cross-section diagram of Varley's double-cup insulator for suspending telegraph wires. It consists of two distinct cups (''c'', ''C''), which are moulded and tired separately, and afterwards cemented together. The... |