Pair of tuning forks marked W.E.C. London
Pair of tuning forks marked W.E.C. London, used as frequency standards for setting up electronic circuits pre-1924. Frequencies 900 and 1000 hertz
Details
- Category:
- Electricity and Magnetism
- Object Number:
- 1984-120
- type:
- tuning fork
- credit:
- STC Transmission Products Division
