Original Swedish "Birka" bimetal relay with heating coil
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
LicenseOriginal Swedish Birka' bimetal relay with heating coil
Science Museum Group
© The Board of Trustees of the Science Museum
Original Swedish "Birka" bimetal relay with heating coil, all enclosed in a vacuum tube, type 48 A/3
Details
- Category:
- Electricity Supply
- Object Number:
- 1932-393
- Materials:
- metal (unknown)
- Measurements:
-
overall: 110 mm x x , 31 mm,
- type:
- relay
- credit:
- Birka Regulator Co.
