Astronomy. Instrument of measurement (Octant) of John Hadley (1682-1744), mechanic and english astronomer, and varied changing proposed to improve it. Engraving by Bénard for the "Encyclopaedia" of Diderot (XVIIIth century). © Roger-Viollet
Astronomy. Instrument of measurement (Octant) of John Hadley (1682-1744), mechanic and english astronomer, and varied changing proposed to improve it. Engraving by Bénard for the "Encyclopaedia" of Diderot (XVIIIth century). © Roger-Viollet

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 Metadata

  • 8820-13

  • Caption:
    Astronomy. Instrument of measurement (Octant) of John Hadley (1682-1744), mechanic and english astronomer, and varied changing proposed to improve it. Engraving by Bénard for the "Encyclopaedia" of Diderot (XVIIIth century).
  • Credit:
    © Roger-Viollet
  • Author of the shot:
    DIDEROT DENIS/HADLEY JOHN
  • Inventory number:
    RV-474838
  • File size:
    2813 x 4423 pixels (782 Ko)
  • Rights:
    Prior permission required for all advertizing & promotional use or use on consumer goods & derivative products.
  • Keywords: ASTRONOMERASTRONOMYCHANGINGDIDEROTENCYCLOPAEDIAENGLISHENGRAVINGINSTRUMENTMECHANICPERFECTIONTO IMPROVEVARIED