Mechanism of the Keith line switch
- Made:
- 1904-1920
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LicenseMechanism of the Keith line switch
Science Museum Group
© The Board of Trustees of the Science Museum
Mechanism of the Keith line switch, forerunner of the subscriber's line uniselector ( 1904-1920)
Details
- Category:
- Telecommunications
- Object Number:
- 1970-540
- type:
- switch
- credit:
- Plessey Telecommunications
