Gnomonique graphiqueou methode simple et facile pour tracer les cadrans solaires sur toute sorte de plans et sur les surfaces de la sphere et du cylindre droit. Sans aucun calcul et en faisant usage que de la regle et du compas. Deuxieme edition suivie de la gnomonique analytique. Ou solution par la seul analyse de ce probleme general: Trouver les intersection des cercles horaires avec une surface donne'e

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