Potentiometer, International OHM
1927
- Title
- Potentiometer, International OHM
- Collection
- Caltech Photographs
- Series
- Scientific Instrument Photographs
- Dates
- 1927
- Extents
- 1 photographs (negative)
- Abstract
- Serial no. 6680. Very similar to ST-MU-06, but larger. Calibration record inside top is dated Nov. 1947. Imported by James Biddle, Philadelphia. Mfg: Otto Wolff, Berlin.