View Original: | Mirror Galvanometer, James W. Queen & Company, Philadelphia, early 20th century - Museum of Science and Industry (Chicago) - DSC06512.JPG (3923x3502) | |||
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Keywords: Mirror Galvanometer, James W. Queen & Company, Philadelphia, early 20th century - Museum of Science and Industry (Chicago) - DSC06512.JPG en Exhibit in the Museum of Science and Industry Chicago Illinois USA Photography was permitted in the museum without restriction 2014-08-22 11 15 36 own Daderot cc-zero Galvanometers in the Museum of Science and Industry Chicago Uploaded with UploadWizard Mirror galvanometers James W Queen Company |