Astrolabe quadrants are amongst the most sophisticated calculation tools ever made before the invention of the modern computer. They combine the mathematical and astronomical features of an astrolabe with a much smaller size. It is engraved on both sides with astronomical and calendrical scales, and is used with the help of a bird-shaped pointer (in itself a unique feature) that is fixed in the centre. Astrolabe quadrants are extremely rare and only seven have ever been recorded. This is the only such object known to be of English origin. This work was acquired with assistance from the Wolfson Foundation.
More information
Title of artwork, date
Astrolabe quadrant, c. 1388
Date supported
2008
Medium and material
Brass
Dimensions
Radius: 7 cm
Grant
50000
Total cost
350000
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