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18TH CENTURY QUADRANT

18TH CENTURY QUADRANT
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18TH CENTURY QUADRANT
18TH CENTURY QUADRANT
18TH CENTURY QUADRANT
18TH CENTURY QUADRANT

LOT DETAILS

Hadley's quadrant circa 1750, a forerunner to the octant and sextant, 38.1cm (15in) arc circle and radius, interchangeable filters, fine scale and vernier; note the ivory nameplate is missing to the top; a print of a quadrant accompanies this lot