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John Hadley's sextant, 1894
24" x 18"
Giclee Print

John Hadley's sextant, 1894. Hadley (1682-1744) was an English mathematician. From A Popular History of Science, by Robert Routledge, BSc (Lond.), F.C.S. [George Routledge & Sons, Limited., London, 1894]