Universal equinoctial ring sun dial, 1710-1729. With case

Universal equinoctial ring sun dial, 1710-1729. With case Universal equinoctial ring sun dial, 1710-1729. With case Universal equinoctial ring sun dial, 1710-1729. With case Universal equinoctial ring sun dial, 1710-1729. With case

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Creative Commons LicenseThis image is released under a CC BY-NC-SA 4.0 Licence

Buy this image as a print 

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License this image for commercial use at Science and Society Picture Library

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Creative Commons LicenseThis image is released under a CC BY-NC-SA 4.0 Licence

Buy this image as a print 

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License this image for commercial use at Science and Society Picture Library

License

Creative Commons LicenseThis image is released under a CC BY-NC-SA 4.0 Licence

Buy this image as a print 

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License this image for commercial use at Science and Society Picture Library

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Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group
© The Board of Trustees of the Science Museum

King's College, London| Enquiries to Science Museum, London
© The Board of Trustees of the Science Museum

Universal equinoctial ring dial with leather case. This dial was made by Richard Glynne of Fleet Street between 1710 and 1729. To find the altitude of the Sun, the shadow of the pin was made to fall on the angle or 'nautical' scale on one side of the instrument. To find the time, the suspension ring was set at the latitude, the small index with the pinhole was moved to coincide with the date on the central bridge, and the point of light from the pinhole gave the time on the hour ring.

Details

Category:
King George III
Object Number:
1927-1147
Materials:
brass and leather
type:
sundials, equinoctial sundials, ring dials and equinoctial ring dials
credit:
King's College, London

Parts

Case for universal equinoctial ring dial

Case for universal equinoctial ring dial

Leather case for universal equinoctial ring dial

Materials:
brass and leather
Object Number:
1927-1147 Pt2
type:
instrument case
Image ©
The Board of Trustees of the Science Museum