File:PSM V09 D095 Electrical layout of telegraph equipment.jpg
Jump to navigation
Jump to search
Size of this preview: 800 × 498 pixels. Other resolutions: 320 × 199 pixels | 640 × 398 pixels | 1,024 × 637 pixels | 1,282 × 798 pixels.
Original file (1,282 × 798 pixels, file size: 96 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 | 03:51, 13 July 2010 | 1,282 × 798 (96 KB) | Ineuw | {{Information |Description = Electrical layout of telegraph equipment |Source = http://en.wikisource.org/wiki/Page:Popular_Science_Monthly_Volume_9.djvu/95 |Date = 1876 |Author = Unknown |Permission = {{PD-old}} |other_versions = }} {{GFDL-user-w|e | |
03:38, 13 July 2010 | 1,509 × 966 (160 KB) | Ineuw | {{Information |Description = Morse key and register |Source = http://en.wikisource.org/wiki/Page:Popular_Science_Monthly_Volume_9.djvu/91 |Date = 1876 |Author = Unknown |Permission = {{PD-old}} |other_versions = }} {{GFDL-user-w|en|Wikisource|Ineuw |
File usage
The following 2 pages use this file: