1778 Copper Engraving Antique Heliometer Pierre Bouguer Astronomy Diderot DDR1 UK1 the exterior facade

the exterior facade

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1778 Copper Engraving Antique Heliometer Pierre Bouguer Astronomy Diderot DDR1 UK1 the exterior facade"Astronomie, Instrumens, Hliometre de M. Bouguer" This is an original 1778 black and white copper engraving of a drawing of the heliometer invented by Pierre Bouguer. CONDITION This 235+ year old Item is rated Very Fine +++. Light aging throughout. No creases. No natural defects. No tears. No water damage. Please note: There is a plate impression bordering the image in this print. Product Type: Original Copper Engraving; Black White Grade: Very Fine