Category:Electromagnetic instruments in the Museum of Science and Industry (Chicago)

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This category has only the following subcategory.

G

Galvanometers in the Museum of Science and Industry (Chicago) (8 F)

Media in category "Electromagnetic instruments in the Museum of Science and Industry (Chicago)"

The following 2 files are in this category, out of 2 total.

Dip needle, by W. Wilson, 1 Belmont St., London, NW, for measuring vertical aspect of Earth's magnetic field, c. 1900 - Museum of Science and Industry (Chicago) - DSC06529.JPG 3,551 × 4,281; 7.96 MB
Ryan Electrometer, designed by Prof. Harris Ryan, early 20th century - Museum of Science and Industry (Chicago) - DSC06520.JPG 3,648 × 5,472; 9.53 MB

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