Title: Potentiometer, International OHM
Date: 1927 (approximate)
Original Format: photograph: negative
Description: 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.
Collection: Scientific Instruments
Caltech Archives ID: ST-MU-12
