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Beaufort, Francis, Sir, 1774 - 1857 (Knight, Rear Admiral and hydrographer)

 Person

Found in 1 Collection or Record:

 File

Correspondence on instruments, 1838 - 1849

Reference Code: GBR/0180/RGO 6/159
Scope and Contents Correspondence concerning improved instruments, new techniques and inventions, and a proposed planetarium and cometarium. The new inventions include improved sextants and sea horizons; a micrometer; a paper on finding Greenwich Time, complete with a drawing; achromatic eyepieces; an improved quadrant; drawings of eye pieces; a heliotrope; and an illuminating process for telescopes. The correspondents include Sir B. Donkin, Sir C. Wood, Sir H.G. Ward, Sir W. Denison, J. Challis, C.B. Vignoles,...
Dates: 1838 - 1849
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