Ladies operating a single-current Morse key. Note the 'sounder' backed by a reflecting device to localise the sound. In front of the key can be seen instruments for adjusting the signals and a galvanometer which indicates the presence or otherwise of…
Telegraph Office, Telegraph Street, London, EC1. The Metropolitan Gallery, 1871.
Typical Post Office telegraph office of the late 19th century. This is the Metropolitan Gallery at Telegraph Street, London EC1. Some of the positions have Morse…