direct reading polarised sounder and example of polarised polechanger
- Made:
- 1920-1925 in United Kingdom
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LicenseThis image is released under a CC BY-NC-SA 4.0 Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-NC-SA 4.0 Licence
Buy this image as a print
BuyLicense 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
Example of direct reading polarised sounder and example of polarised polechanger, both designed by Charles Clement Vyle and made by the Automatic Telephone Manufacturing Co Ltd, mounted together on a wooden baseboard and enclosed by a glass shade case, c.1920
Details
- Category:
- Telecommunications
- Object Number:
- 2014-470
- Materials:
- glass, metal (unknown) and wood (unidentified)
- type:
- sounder
- copyright:
- Unknown Copyright holder
