Rheostats (3)
1920
- Title
- Rheostats (3)
- Collection
- Caltech Images Collection
- Series
- Scientific Instrument Photographs
- Identifier
- ST-CH-16.1-3
- Dates
- 1920
- Extents
- 1 photographs (negative)
- Abstract
- On 13″ inscribed: “Central Scientific Company 22.5 Ohm 4.4 Amps”.