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Universal equinoctial ring dial
Universal equinoctial ring dial for all latitudes. Standard dial (see related terms) except for the following details:-
A suspension ring pierces the swivel ball stem, attached to a bracket, which moves in the grooved outer rim of the meridian ring. 'S' and 'N' are marked either side of the zero line on the latitude scale. On the equinoctial ring, there is an hour scale on the obverse side and also on the inner rim. There is a date scale, a declination scale and the equinoxes are marked at 20 March and 24 September. This dial was probably not made by Jones, but was sold in his shop under his name: it is signed 'Jones Holburn London'.
For more information regarding this dial please refer to the OUP & NMM catalogue, 'Sundials at Greenwich'.
A suspension ring pierces the swivel ball stem, attached to a bracket, which moves in the grooved outer rim of the meridian ring. 'S' and 'N' are marked either side of the zero line on the latitude scale. On the equinoctial ring, there is an hour scale on the obverse side and also on the inner rim. There is a date scale, a declination scale and the equinoxes are marked at 20 March and 24 September. This dial was probably not made by Jones, but was sold in his shop under his name: it is signed 'Jones Holburn London'.
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: | AST0157 |
|---|---|
| Collection: | Astronomical and navigational instruments |
| Type: | Universal equinoctial ring dial |
| Display location: | Not on display |
| Creator: | Jones, John |
| Date made: | Late 18th century |
| People: | Jones, John |
| Credit: | National Maritime Museum, Greenwich, London |
| Measurements: | Overall: 4 x 151 mm |