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|Description||Astrolabe. On the front is a sundial based on the universal astrolabe projection, associated with Rojas, and a lunar volvelle and aspectarium. The back is that of a typical astrolabe, with scales and a shadow square in the lower half, upper half blank.|
|Date made||circa 1630|
|Credit||National Maritime Museum, Greenwich, London, Caird Collection|
|Measurements||Overall: 26 x 200 x 153 mm; Diameter: 145 mm|
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