Table instrument with dial, 1903
- Made:
- 1903 in United Kingdom
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Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-NC-SA 4.0 Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-NC-SA 4.0 Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-NC-SA 4.0 Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-NC-SA 4.0 Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-NC-SA 4.0 Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-NC-SA 4.0 Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseTable instrument with dial
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Table instrument with dial
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Table instrument with dial
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Table instrument with dial
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Table instrument with dial
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Table instrument with dial
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Table instrument with dial
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Table instrument with dial
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Table instrument with dial, made by the Clark Automatic Telephone Company, United States, 1903. From automatic interdepartmental telephone switchboard installed at Guy's Hospital, February, 1903.
This is one of the telephones used for internal communication between various departments at Guy's Hospital between 1903 and 1932. Rotating the dial to the number needed wound a spring inside the telephone, which drove a toothed wheel. Electrical impulses were sent for each tooth passed to an electromagnet in a selector switch, which then connected the telephone to the number called.
Details
- Category:
- Telecommunications
- Object Number:
- 1933-32
- Materials:
- metal (unknown), wood (unidentified), plastic (unidentified) and brass (copper, zinc alloy)
- Measurements:
-
overall: 350 mm x 215 mm x 310 mm, 4.1 kg
- type:
- telephone
- credit:
- Donated by The Governors of Guy's Hospital
