Evershed's ohmmeter, patent, No 7911
Evershed's ohmmeter, patent, No 7911, portable testing set.
Details
- Category:
- Electricity Supply
- Collection:
- Sir Henry Wellcome's Museum Collection
- Object Number:
- A204692
- type:
- ohmmeter
Evershed's ohmmeter, patent, No 7911, portable testing set.
