Electrically maintained tuning fork type D-77-A
- maker:
- Muirhead and Company Limited
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Science Museum Group
© The Board of Trustees of the Science Museum
Electrically maintained tuning fork type D-77-A, no. 138729, by Muirhead and Co. Ltd.
Details
- Category:
- Telecommunications
- Object Number:
- 1989-1159
- type:
- tuning
- credit:
- Muirhead Vactric Components Limited
