Product images of Universal equinoctial ring dial
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Manufactured in the UK
Universal equinoctial ring dial
Universal equinoctial ring dial for all latitudes. Standard dial (see related terms) except for the following details: the dial has a latitude scale, a scale for determining solar altitude, a date scale and a declination scale, but no zodiac scale. On both the obverse side and the inner rim of the equinoctial ring are hour scales and the equinoxes are marked at 9 â”œÃ²_ March and 12 â”œÃ²_ September. There is a star engraved on the slider rivet of the gnomon.
- Image reference: F2105-1
- National Maritime Museum, Greenwich, London, Gabb Collection