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Radio Transmitter

Model HT-40

Anoxia Photometer

Model 17-006

Spencer Binocular Microscope

This microscope belonged to Dr. John Parish, Grinnell College class of 1927. The manufacturing date of 1930 is an estimate based on his dates at Harvard Medical School. Following graduation from medical school in 1933, he returned to Grinnell to join his father's medical practice. The Parish's medical practice in Grinnell lasted for more than 80 years. (Browse to te_023 to see his father's microscope) This microscope was donated to the Physics Museum by Dr. John Parish's daughters.