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Universal equinoctial ring dial
Universal equinoctial ring dial for latitudes 0°-90°. Standard dial (see related terms) except for the following details:-
The dial is for northern latitudes only and the latitude scale is divided clockwise [0°]-90°. The obverse side of the equinoctial ring is plain and on its reverse side and inner-rim are hour scales. There is a date scale, a declination scale, but no zodiac scale. The equinoxes are marked at 11 March and 13 September. This is a very simple dial and possibly an amateur piece. Unusually, red enamel has been used to mark the hours on the equinoctial ring.
For more information regarding this dial please refer to the OUP & NMM catalogue, 'Sundials at Greenwich'.
The dial is for northern latitudes only and the latitude scale is divided clockwise [0°]-90°. The obverse side of the equinoctial ring is plain and on its reverse side and inner-rim are hour scales. There is a date scale, a declination scale, but no zodiac scale. The equinoxes are marked at 11 March and 13 September. This is a very simple dial and possibly an amateur piece. Unusually, red enamel has been used to mark the hours on the equinoctial ring.
For more information regarding this dial please refer to the OUP & NMM catalogue, 'Sundials at Greenwich'.
For more information about using images from our Collection, please contact RMG Images.
Object Details
| ID: | AST0329 |
|---|---|
| Collection: | Astronomical and navigational instruments |
| Type: | Universal equinoctial ring dial |
| Display location: | Not on display |
| Creator: | Unknown |
| Date made: | early 18th century |
| Credit: | National Maritime Museum, Greenwich, London, Caird Collection |
| Measurements: | Overall: 3 x 76.5 mm |