Three line-connection charts and one associated equipment label, for Western Electric No 7-A machine switching system, made by Bell Telephone Manufacturing Company SA, Antwerp, 1920-1940
Details
- Category:
- Telecommunications
- Object Number:
- 1975-516/7
- type:
- chart
- taxonomy:
-
- visual and verbal communication
- credit:
- Donated by the City of Kingston upon Hull (Telephone Department)
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