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Equinoctial Dial
Signed by Juan Cocart
Dated 1596; Spanish
Gilt brass and silver; 11 x 43 x 44 mm
The outer part of the lid of this equinoctial dial has a table of latitudes for 16 places. The inner part is decorated with two concentric circles in the centre and Tudor roses in the spandrels. The hour circle is folding and the hours are numbered 1 to 12 twice. On the square where the hour circle is fixed there is also a brass arm used for adjusting the latitude. The box contains a compass with the indication of the cardinal points 'SE', 'OR', 'ME', 'OC' and on one side is a scale for setting the dial to the appropriate latitude, divided on the top every degree and numbered on the side of the box from 10 to 70. The bottom of the box has another table of latitudes for 16 places.The lower edge is engraved with the inscription 'Ravizza correxit pro grad 26 m 10, 1799' and the right edge with 'Juani Cocart me fe 1596'. The former inscription refers to the correction of the compass for magnetic deviation in 1799. Provenance: Lewis Evans Collection S. 7. Ilaria Meliconi
Museum of the History of Science, Oxford
Inventory number 51773
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Basic URL: http://www.mhs.ox.ac.uk/epact/catalogue.php?ENumber=14859 |
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