Instructions for use
Select an object to view from the list below. To rotate either click on the rotate icon located in the bottom right hand corner of the image or click and drag within the object window.
Telesonic Lorgnette
Submarine telegraph cable
Cookes portable double-needle telegraph
School telephone
Portable double-needle telegraph, 1850
Box telephone, c.1877
John Gaveys ring transformer
Valve heater transformer
This dates from 1838 and forms part of W F Cookes earliest design of an electric telegraph system for railway use. It was intended to be carried in trains and to be used in emergencies, when it would be plugged in to a lineside junction box.