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Deflection galvanometer, composed of two stationary inner coils and one revolving outer coil. Possibly made in the Caltech Physics Shop, ca 1920s–1930s. Photo ID ST-PH-28

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The Archives Reading Room is open by appointment only.

Please note our current policy concerning visitors to the Caltech campus:

• Caltech requires all visitors to campus buildings to be fully vaccinated against COVID-19.  We will ask you to show us documentation of your vaccination and booster before admitting you to the building.
  
  
• All staff and visitors are required to wear snug-fitting N95, KN95, or KF94 masks in the Archives and other Caltech Library spaces. If you do not have such a mask, we can provide one.

For research assistance please contact archives[at]caltech.edu

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To submit a request for an appointment or for copies of materials, please register for an Archives account. You may submit a request as soon as you have created your account.

For general inquiries, please contact us in the following manner:

The Caltech Archives Staff

Hours

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The Archives Reading Room is open by appointment only.

For research assistance please contact archives[at]caltech.edu
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Archives Reading Room Hours:

• Monday-Wednesday and Friday
  9 a.m. to 12 p.m. and 1 p.m. to 4 p.m.
  
• Thursday
  10:30 a.m. to 12 and 1 p.m. to 4 p.m.
  
  We are closed on weekends and major U.S. holidays.
  

Upcoming holidays:

• Monday, May 30^th 2022 (Memorial Day)
• Monday, June 20^th 2022 (Juneteenth Observed)
• Friday, July 1^st - Monday, July 4^th 2022 (Independence Day Holidays)
• Monday, September 5^th 2022 (Labor Day)
• Thursday, November 24^th - Friday, November 25^th 2022 (Thanksgiving Holidays)
• Monday, December 26^th 2022 - Monday, January 2^nd 2023 (Christmas-New Year Holidays)