File:EB1911 Telegraph - Connexions for Double-current Working.jpg
Jump to navigation
Jump to search
Size of this preview: 647 × 599 pixels. Other resolutions: 259 × 240 pixels | 518 × 480 pixels | 665 × 616 pixels.
Original file (665 × 616 pixels, file size: 83 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 | 18:35, 19 February 2016 | 665 × 616 (83 KB) | Library Guy | {{Information |Description ={{en|1=The general arrangement of the connexions for double-current working; the galvanometer G is used for the purpose of indicating whether a station is calling, in case the relay sticks or is out of adjustment. The key... |
File usage
The following 2 pages use this file: