A German electric brass and steel tank regulator
Dr. Sigmund Riefler
The circular silvered dial under a glass dome, having Arabic minutes and subsidiary seconds and twenty-four hour dials, inscribed Dr. S. Riefler D.R.P. No. 50739 no. 329 Munchen D. R.P. No. 100870, 1912, the steel shaft with applied label inscribed University of California 00-10-32410.