Morse - Electric Telegraph
Morse telegraphic apparatus Card 1 of 2 A - the forwarding end C - the key which produces the break of contact F - the sounder system
Picture No
10017000
Media ID
47188419
Size
5050px x 2817px
(2.3MB)
Credit
Mary Evans Picture Library
Source
Eckhardt Physics in Pictures Fig XVII . XVIII
Date
1882
