Telephone Exchange Mercury Switch

Made:
1945-1955 in United Kingdom
maker:
Power Equipment Company Limited
Telephone Exchange Mercury Switch

Telephone Exchange Mercury Switch
Science Museum Group
© The Board of Trustees of the Science Musuem

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