Product images of Universal equinoctial ring dial
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We only use premium branded inks, and colours are independently verified to last between 100 and 200 years.
Universal equinoctial ring dial
Three-ring universal equinoctial ring dial for all latitudes. This is a rather large and heavy instrument. The double alidade allows the user to measure the difference in altitude of two different objects. The hinged stops for the equinoctial ring are unusual, as are some of the town names that appear in the table of latitudes: 'Chaumont en Bassigny', 'Chalons-sur-Marne' and 'Langres'. They suggest that the original owner probably lived in the Ardennes. The dial is signed 'Baradelle fils AParis. 1774' on the meridian ring.
- Image reference: D8757
- National Maritime Museum, Greenwich, London