View Original: | Ayrton and Perry Ammeter, made by C. W. Holtzer, 1880 - Museum of Science and Industry (Chicago) - DSC06568.JPG (2801x3276) | |||
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Keywords: Ayrton and Perry Ammeter, made by C. W. Holtzer, 1880 - Museum of Science and Industry (Chicago) - DSC06568.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 22 04 own Daderot cc-zero Electrical equipment in the Museum of Science and Industry Chicago Uploaded with UploadWizard Ammeters |