Erich Weidenhammer (erich.weidenhammer@utoronto.ca), from the Institute for the History & Philosophy of Science & Technology would like to hear from members who used Mirror or other types of Galvanometers. Please contact Erich if you used one of these in your career sometime. Erich is also Curator of the rather sizable U of T Scientific Instrument Collection which includes many early electrical marvels (https://utsic.utoronto.ca/). Thanks!