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
One of the earliest designs of telephone designed by A G Bell to be brought into practical use. This was the version for mounting on a wall, but it lacks the mouthpiece, which would have been inserted into the hole in the box.