Telephone Exchange Mercury Switch
- Made:
- 1945-1955 in United Kingdom
Mercury switch type 7A made by the Power Equipment Co. Ltd, c.1950.
Details
- Category:
- Telecommunications
- Object Number:
- Y2003.22.120.2
- Materials:
- metal (unknown), mercury, plastic (unidentified) and textile
- Measurements:
-
overall: 150 mm x 240 mm x 170 mm,
- type:
- telephone component
- credit:
- Gift of British Telecommunications plc
