Universal equinoctial ring sun dial, 1710-1729
Universal equinoctial ring dial
- Materials:
- brass (copper, zinc alloy) and steel (metal)
- Object Number:
- 1927-1147 Pt1
- type:
- ring dial
Universal equinoctial ring sun dial, 1710-1729. With case
- maker:
- Richard Glynne
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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
- type:
- sundials, equinoctial sundials, ring dials and equinoctial ring dials
- copyright:
- Unlinked Name
- credit:
- King's College, London
Parts
Case for universal equinoctial ring dial
Leather case for universal equinoctial ring dial
