![](https://coimages.sciencemuseumgroup.org.uk/64/17/large_thumbnail_2014_0044__0003_.jpg)
Key switch
- maker:
- Muirhead and Company Limited
![Key switch, 'make before break', type 7A, by Muirhead and Co](https://coimages.sciencemuseumgroup.org.uk/424/688/medium_smg00080564.jpg)
Key switch, 'make before break', type 7A, by Muirhead and Co. Ltd., and box
Details
- Category:
- Telecommunications
- Object Number:
- 1989-1045
- type:
- keys
- credit:
- Muirhead Vactric Components Limited
Key switch, 'make before break', type 7A, by Muirhead and Co. Ltd., and box