Magnetic key, 1850-1870

Magnetic key, 1850-1870 Magnetic key, 1850-1870 Magnetic key, 1850-1870

Creative Commons LicenseThis image is released under a CC BY-NC-SA 4.0 Licence

Buy this image as a print 

Buy

License this image for commercial use at Science and Society Picture Library

License

Creative Commons LicenseThis image is released under a CC BY-NC-SA 4.0 Licence

Buy this image as a print 

Buy

License this image for commercial use at Science and Society Picture Library

License

Creative Commons LicenseThis image is released under a CC BY-NC-SA 4.0 Licence

Buy this image as a print 

Buy

License this image for commercial use at Science and Society Picture Library

License

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Magneto induction key for an electric telegraph, made by Siemens and Halske, Germany, 1850-1870.

This magneto induction key was used in an electric telegraph, and was made by Siemens and Halske around 1860. The key did not require a battery as it incorporated a magneto generator actuated by pressure of the Morse key which provided the signalling current.

Details

Category:
Telecommunications
Object Number:
1923-513
Materials:
brass (copper, zinc alloy), wood (unidentified), metal (unknown) and iron
Measurements:
overall: 150 mm x 175 mm x 360 mm, 12kg
type:
telegraph
credit:
Donated by Siemens Brothers and Company Limited