Spectrometer, 1965-1987

(84) Goetz aerosol spectrometer, Othmar Preining operating, June 29, 1965; (1856) Mass spectrometer, May 14, 1973; (1959) Particle spectrometer, August 1, 1973; (1974B) X-ray fluorescence spectrometer, August 9, 1973; (2392) Stewart Poet and Ed Martell at spectrometer for radioactive particles, June 26, 1974, photographer initials:CW; (2558) Spectrometer remains, Graphics, parts to put together for schematic drawing, September 13, 1974; (7178) Spectrometer made for the University of Michigan, September 30, 1987.