Mercury tube No. 9 for switch
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Science Museum Group Collection
© The Board of Trustees of the Science Museum
Mercury tube No. 9 for switch, c.1950
Details
- Category:
- Telecommunications
- Object Number:
- Y2003.22.120.6
- Measurements:
-
Overall: 70 mm x 30 mm x 40 mm, 366 g
- type:
- switching unit
- credit:
- Gift of British Telecommunications plc
