Electrically maintained tuning fork, by Muirhead

maker:
Muirhead and Company Limited

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Science Museum Group
© The Board of Trustees of the Science Museum

Science Museum Group
© The Board of Trustees of the Science Museum

Electrically maintained tuning fork, frequency standard used for synchronous working on picture standard facsimile machines

Details

Category:
Telecommunications
Object Number:
1989-1028
type:
standards frequencies, phonic motors and frequencies, phonic motors and standards
credit:
Muirhead Vactric Components Limited