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Description

Jackson and Adams describe their universal sundial, which shows the hour when the sun is on the equinox, when it is on the meridian at twelve, and it shows the sun's azimuth. It also shows the sun's altitude, variation of the needle, and the declination of a plane.

Subject: Scientific apparatus and instruments

Read to the Royal Society on 24 February 1731

Reference number
CLP/3ii/32
Earliest possible date
1731
Physical description
Ink on paper
Page extent
3 pages
Format
Manuscript

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Citation

Paper, 'The description of an universal dial' by Joseph Jackson and Geo [George] Adams, 1731, CLP/3ii/32, The Royal Society Archives, London, https://makingscience.royalsociety.org/items/clp_3ii_32/paper-the-description-of-an-universal-dial-by-joseph-jackson-and-geo-george-adams, accessed on 08 August 2026

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  • Classified Papers

    The 'Classified Papers' of the Royal Society are papers from British and international natural philosophers and scholars categorised according to subject areas.

    Dates: 1592 - 1741

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