Mercury tube No. 9 for switch

Mercury tube No. 9 for switch, c.1950

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Mercury tube No. 9 for switch, c.1950
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:
Y2003.22.120.7
Materials:
glass, copper, mercury and paper
Measurements:
Overall: 70 mm x 30 mm x 40 mm, 355 g
type:
switching unit
credit:
Gift of British Telecommunications plc