Varley's carbonised cloth rheostat by Townson & Mercer
- Made:
- 1890-1939
- maker:
- Townson and Mercer
Varley's carbonised cloth rheostat by Townson & Mercer, consisting of a number of cloth discs which can be compressed by a screw
Details
- Category:
- Science Teaching
- Object Number:
- 1983-1017
- type:
- rheostat
- credit:
- Mary Datchelor Girls' School
