This image is released under a CC BY-NC-SA 4.0 Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseHeurtley relay no. 100621, and cover, by Muirhead and Co. Ltd
Science Museum Group
© The Board of Trustees of the Science Museum
Heurtley relay no. 100621, and cover, by Muirhead and Co. Ltd., April 1940
Details
- Category:
- Telecommunications
- Object Number:
- 1989-921
- type:
- heurtley
- credit:
- Muirhead Vactric Components Limited
